So, has been a while since I've seen the layout, so I'm speaking from an oldy perspective.
Skin: Chromatic 2.0 (Nick 4eva)
Pokémon: Main Series Games
Merging the Pokemon Video Games into individual sub boards and having Sun & Moon as the main one is very nicely done. The icons of the legendaries is a nice touch too, so I like that and nice to whoever though of it.
Fan Games
If you're looking to condense different boards, then maybe you should look at this. Seems like some of these could be sub-boarded like you've done on other areas of the main board. However, in my time, I never really followed this section much.
Community Square
So, this is the one that's strange to me. Feedback & Support has been punted down to the bottom of the page. I feel this is a little strange. Maybe because I'm so use to seeing it at the top, but it does give off better vibes having the Feedback & Support section at the top, showing quickly to people where they can go if they have any issues. However, if that were to be done, just having the Feedback & Support at the top would look odd on its own, so that's a strange one. I see what you're all doing putting the main video games up at the top, as that's about 60% reason why people are here (guessing).
Off-Topic
Off-Topic is a mess, imo. There are far too many different boards in here. I understand the word and implication 'Off-Topic', but having Video Games and Entertainment and Media as sub-topics is strange. Unless traffic has changed since I've been gone, VG brought in consistent high numbers of traffic and E&M, while it wasn't the biggest swinger, it pairs well with VG. VG should be it's own main topic. It's, arguably, the second most popular topic on this forum after the main games, again unless things have changed.
Considering how you've organised the sub-topics, why isn't Forum Games in there? Surely that's the definition of Off-Topic? It, technically, provides nothing positive for the forum, just a spam centre with a bit of fun. Also, the layout of all of the boards doesn't make sense. You have 3 boards, then the big Off-Topic sub boards, then one after? Off-Topic should be above all of them or below all of them.
Also, for Pokemon Trivia and The Underground, I think Pokemon Trivia could be make it's own sub board under Off-Topic, as it's very active, but The Underground should be looked at axing. Speaking to the old admins, if you think back to my reign in VG, The LP Board was more activate than The Underground, yet it got merged. Outside of the 'Hangout' sticky (because regardless of the board, those types of threads are always going to get posts), actual topical posts, there are only 5 threads that have had activity in 2017. Speaks for itself, imo.
I'd recommend breaking off the media based boards off into a new board called Media Square to keep it inline with your existing theme.
If I were to re-organise, this is how it'd look.
Media Square
> Video Games
> Entertainment & Media
> Anime & Manga (Could be a sub-board to E&M)
> Science & Technology
Community Square
Off-Topic
> Feedback & Support
> The Bulletin Board
> Meet & Greet
> Off-Topic
>> A New Leaf
>> Forum Games
>> Lifestyle & Health
>> The Round Table
>> Pokemon Trivia
Maybe I'm just bias, but I think it works better, at least on paper. I think throwing everything that doesn't seem to fit into Off-Topic is lazy and that was the first thing I thought when I signed in today after seeing it previously.
I appreciate that you want to condense the amount of boards on the forum because, I admit, it was farrrrr toooooo longggggg in the past. It's going in the right step, but I think a bit more tweaking and some more condensing; I'm looking mainly at Fan Games.
Well, that's my thoughts on it as an old member. Realise it might be tl;dr, but could be useful for the 'elders'.