Rate my NU team

Hey guys ^^
So I made this NU team, and I'm not entirely sure if it's needs any improvements :)
And I'd be happy if you'd help me out ;)

To be quite frank, Assault Vest isn't a good item on Samurott because it doesn't have the best offensive power or the best special bulk. For physical Samurott, it's better off setting up Swords Dance boosts, as 100 Attack, as I mentioned, isn't the strongest. Shell Armor is a rather situational ability as well.:
-Swords Dance
-Waterfall
-Megahorn
-Aqua Jet
Nature: Adamant
EVs: 160 HP/252 Atk/96 Spe
Item: Life Orb/Lum Berry
Ability: Torrent

or
-Hydro Pump
-Ice Beam
-Grass Knot
-Taunt/Aqua Jet/Superpower/Knock Off
Nature: Modest/Rash
EVs: 4 Def/252 SAtk/252 Spe
Item: Life Orb
Ability: Torrent

As weird as this sounds, Unnerve is the better ability for Pyroar to use, as berries see niche use. Rivalry is too inconsistent and Moxie is useless on a special attacker like Pyroar. Hyper Beam is a bad move competitively because it leaves Pyroar a sitting duck the next turn. Fire Blast is also the preferred Fire STAB, as it still has acceptable accuracy:
-Fire Blast
-Hyper Voice
-Hidden Power (Grass)
-Will-o-Wisp/Flamethrower
Nature: Timid
EVs: 4 Def/252 SAtk/252 Spe
Item: Life Orb/Choice Specs
Ability: Unnerve

or
-Fire Blast/Overheat
-Flamethrower/Overheat
-Hyper Voice
-Hidden Power (Grass)/Endeavor
Nature: Timid
EVs: 4 Def/252 SAtk/252 Spe
Item: Choice Scarf
Ability: Unnerve

Setting up Shell Smash and Stealth Rock is just making Crustle do too much at once. Having Earthquake as your lone offensive attack means that Crustle will be walled by Flying Pokemon, a type that it handles very well normally. Sturdy is also the superior ability on Crustle, as it ensures that it can do something from full health:
-Stealth Rock
-Spikes
-Rock Blast
-Knock Off
Nature: Jolly
EVs: 252 Atk/4 Def/252 Spe
Item: Red Card/Mental Herb/Custap Berry
Ability: Sturdy

or
-Shell Smash
-X-Scissor
-Stone Edge
-Earthquake
Nature: Jolly
EVs: 252 Atk/4 Def/252 Spe
Item: Life Orb/Lum Berry/White Herb
Ability: Sturdy

However, you can also consider Sandslash as an alternate hazard setter, as it also provides Rapid Spin support for Pyroar:
-Earthquake
-Knock Off
-Rapid Spin
-Stealth Rock
Nature: Adamant/Impish
EVs: 172 HP/252 Atk/84 Spe (Adamant) or 252 HP/252 Def/4 SDef (Impish)
Item: Lum Berry (Adamant)/Leftovers (Impish)

Crustle and Pyroar share a weakness to Water and Samurott isn't enough to cover for this. What you need is a Grass Pokemon to cover that weakness. Examples are Gourgeist (Super Size), Gogoat, Lilligant, Tangela, and Quilladin (either one should go over Weezing):

Gourgeist:
-Will-o-Wisp
-Leech Seed
-Synthesis
-Foul Play/Seed Bomb
Nature: Impish
EVs: 252 HP/252 Def/4 SDef
Item: Leftovers
Ability: Frisk

Gogoat:
-Bulk Up
-Horn Leech
-Earthquake
-Substitute
Nature: Adamant
EVs: 252 HP/4 Atk/252 SDef
Item: Leftovers
Ability: Sap Sipper

Lilligant:
-Quiver Dance
-Giga Drain
-Hidden Power (Fire)/Nature Power
-Sleep Powder
Nature: Timid
EVs: 252 SAtk/4 SDef/252 Spe
Item: Life Orb/Miracle Seed/Meadow Plate
Ability: Chlorophyll

Tangela:
-Leaf Storm
-Giga Drain/Ancient Power
-Hidden Power (Fire)
-Sleep Powder
Nature: Modest
EVs: 252 HP/4 Def/252 SAtk
Item: Eviolite
Ability: Regenerator

or
-Giga Drain
-Hidden Power (Fire)
-Sleep Powder/Toxic
-Leech Seed/Synthesis
Nature: Bold
EVs: 252 HP/252 Def/4 SDef
Item: Eviolite
Ability: Regenerator

Uxie can also act as the team's hazard setter if you didn't opt for Sandslash or the hazard-setting variant of Crustle:
-Stealth Rock
-Psychic
-U-turn
-Thunder Wave
Nature: Relaxed
EVs: 252 HP/252 Def/4 SDef
Item: Leftovers

If you did opt for Sandslash or the hazard-setting Crustle, here's a better take on Calm Mind Uxie. Signal Beam lets it deal with Dark Pokemon, while Giga Drain provides recovery:
-Calm Mind
-Psyshock
-Signal Beam
-Giga Drain/Hidden Power (Fire)
Nature: Timid
EVs: 4 Def/252 SAtk/252 Spe
Item: Leftovers

Oh golly gee! I did not expect to get such an in depth answer!
Thank you very much!
I'm definitely looking to change some of my things around now ;)
And yea, you are definitely correct on most of your points.
The reason I went with weezing specifically is; that it walls pokemon like Scyther and Fletchinder, and is able to deal a swift killing blow with a T-Bolt.
But I'll totally try some of the different sets you came up with! Again, thank you very much!

Ok, so I've made some drastic changes to the team, using the same theme with most of the base still intact.
I have thought about using mesprit, but it feels a bit fragile compared to Uxie, which is why I like Uxie sweep above the other.
So now I have two variants.(The team using Fletchinder is hands down my favorite, cuz damn it's broken...)


But I have thought about making a mesprit team, but I can't really find a dark-type I'm comfortable using in the Dark/Fight/Psychic core.... :/

U-turn makes Fletchinder erase its Attack boosts upon leaving battle, which isn't really a good thing. Will-o-Wisp should be in that slot to cripple physical attackers that switch in.

Gurdurr also needs Mach Punch to bypass its low Speed and pick off weakened (and frail) attackers:
-Bulk Up
-Drain Punch
-Mach Punch
-Knock Off/Ice Punch
Nature: Adamant
EVs: 252 HP/252 Atk/4 SDef
Item: Eviolite
Ability: Guts

The best Dark Pokemon to turn to in this kind of team, IMO, is Zweilous. In addition to providing the Dark type needed in your wanted core, it also provides other resistances like Fire, Grass and Water. Be mindful of Hustle misses, though:
-Crunch/Dragon Tail
-Roar/Dragon Tail
-Rest
-Sleep Talk
Nature: Careful
EVs: 252 HP/4 Def/252 SDef
Item: Eviolite

or
-Crunch
-Outrage
-Superpower
-Head Smash
Nature: Adamant
EVs: 4 HP/252 Atk/252 Spe
Item: Choice Band

I'll give you an answer in a short while.
But if you guys want to check out the stream tonight: I'll be streaming with these teams right now!
https://www.twitch.tv/liitlecrow

Oh, yea true. I totally forgot about the Mach punch :) Wow

Hmm yea, Zweilous might be a good idea!
Right now I'm trying out Malamar ^^
But I might definitely try out running the team with Zweilous ^^