Well, if you insist... Find a way to defeat steel types. Aggron, Mawile, and Metagross wall you hard.
Since this a post-bank team, you'll be dealing with Taunt from Thundurus and maybe Sableye, two of the fastest users in doubles. You'll need at least two attacks on each Pokemon to be able to stand up against these two. Also, don't be surprised if Thundurus throws Thunder Wave everywhere. Find a way to get around your paralysis weakness.
252 SpA Cresselia can kill Scolipede and Beedrill in 2 shots. It laughs at the rest of your team because of how specially defensive it is. It takes Tyranitar 3x Crunch to kill Cress, think about how much it would take for your bugs to do so.
Trick Room cripples you. Speed rain cripples you.
Charizard Y rips 6/7 of your team apart. You'll need rock attacks.
Lucario needs full investment into attack and speed. It's too frail to bother with HP investment, even in mega form.
My thought process going into a battle is, with any one or two of these threats, I should be able to proceed and knock them out. All of them on one team? Then I'm probably screwed.
As long as Beedrill gets two shots at Brick Breaking Steel types, I should be fine. I've also got Lucario, Fire Blast Clefable and Greninja.
From the 5 or so battles I've done so far, Amoonguss (or whichever lead) has been able to attract T-waves from Klefki pretty well. Often times they won't try to go for the paralysis on the other 'mon since Amoonguss isn't guaranteed to not get off another Rage Powder. I've also got Aromatherapy. I haven't precisely figured out how to get around Taunt, but I'm working on it.
I've scrapped Scolipede, but a Beedrill Pin Missile has the potential to OHKO Cresselia, again, as long as I got a Follow Me 'mon.
Same for Speed, Follow Me and Rage Powder get +3 priority, so as long as I'm able to wall one attack, Beedrill will be free to attack. If my wall is felled, I send in another one.
Charizard is OHKOed by Poison Jab, so as long as I sacrifice a guy I should be fine.
My defiance is not for the sake of argument, but to show that there is at least
some viability in this team. Obviously the counter-situations I give have major flaws; Beedrill will go down occasionally. But I've got Pokemon that know moves that actually do damage, so I have a semi-productive backup plan. I guess after putting together a team I don't exactly expect to be advised to scratch it. My defying your counters is my hope that perhaps this team is at least worthy enough of suggestions for improvement, rather than ditching the whole thing.