First off I want to say COH2.org Discord is hosting a tourney based on winter balance prview so we can get some samples and have a bit of fun.
On to thoughts
Armor on wasp is huge for brits. Still won't be as good as a flame halftrack but god damn that's going to be fun.
Little bit about the teching for Brits thou.
One of the ways Brits is staying competitive right now adjusting to the Tommy nerfs is by rushing fast Cromwell. The good stalling power of brits and trenches allow. Giving a lot of Cqc options is pretty good but here is my concern.
It's going to be easier for top UKF players to get armor out. Meaning, we might be seeing 8-9 minute Centaurs due to how UKF teching works. It technically only takes 145 fuel in order to start unlocking mediums assuming skipping things like Bolster, AEC, etc.
Here you've given even easier ways to skip bolster with 5 man spawning squads which eliminates the 35 fuel needed for bolster. Here you've given a CQC anti infantry unit as an alternative to Sniper in the mid game.(A lot of brit players get a sniper to supplement A.I since tommy mid game has no meaninful offensive vet) Along with the lend lease doctrine, you can skip AEC tech and get AA halftrack vs ost. With a potentially much better early game, Wasp Buffs, CQC mid game unit, Brit will have a much better mid game than ever before. BUT I'd say you can get a centaur competitively with LV timing about 8-9 minutes since all of these factors lead to NEEDING LESS FUEL TO BE COMPETITIVE WHILE ALSO INCREASING MAP PRESENCE.
This is going to completely flip flop mid-low level Brit vs OST. Espically a level where people don't understand how to deal with Assault troops and a level where the moving accuracy/RA buffs will help the most.
In essense, a recipe for Cheese.
What i'm suggesting is to force the unlock of AEC or Bofors tech in order to unlock T3. This wouldn't nerf traditional doctrines but rather an anti chese measure.
So counter it the same way you counter assgren spam? Assault officer and assault section have no snare unlike cav rifles.
I mean without bolster REs or AEC you're going to be pretty vulnerable to Luch or FHT. Especially on CQB maps where Atg are easily avoided. And larger maps the assault sections will struggle so you'll need at least Brens sections and or five man anyway.
I imagine we will still see a lot of five man and double sapper builds or AEC just because of these vulnerabilitys. Really Cromwell rush is nothing new and light vehicles will still punish it just the same. (And if you invest in a AAht that's still a fuel sink delaying tech similar to AEC, which also will struggle vs 444 and the late game of that doctrine kinda sucks)
Not saying your fears are unfounded, but let's see how it plays out. The counter to this seems obvious really.