You can probably also go Pioneer-spam blobs. I am pretty sure you will be able to win the first few engagements, but you will start losing 3 minutes into the game.
What the HELL man?
Are you trolling?
Pioneers have ZERO access to ANY AT. There is no probably, it's not going to happen. This isn't CoH1, you're not going to make Pioneer spam happen just because you upped their accuracy by a tiny bit.
And you think Soviet Tier 1 is the most problematic in the game?
Are you out of your mind?
Why does Soviet Tier 1 have to equal (or exceed) other nations Tier 1 WHEN THEY HAVE THE FREAKING CHOICE OF BUILDING TIER 2 IMMEDIATELY. Not a single other nation has this opportunity, especially when it comes to quickly fielding cheap, effective anti-tank.
Honestly, this is ridiculous at this point.
I have yet to see even CLOSE to a majority support this current direction of your balance patches. I see tons and tons of people scratching their heads and starting to get worried if you should be allowed anywhere NEAR this game in terms of balance decisions.