My mistake, I always go for T2 starts these days.
I don't see how this is that hard of a choice when you can get a light vehicle out of T3 that can kill any axis light vehicle other than a Puma out at like 6-7 minutes. Clown car shittery was dumb and silly, it's much better that flamers are actually flamers not some stupid mad max toy. Like you can still use an M3 to get behind and MG or do a flank you just can't chase and flame crit shit all the way back to an enemies base. Reliable performance always beats out everything unless you actually like bullshit RNG.
Going T2 quickly after isn't that hard either when it costs like 2-3 minutes of fuel income at most. The quickest thing the enemy can possibly make is a FHT and even those when rushed don't hit the field till minute 6-7.
Outside of doing damage to light vehicles, the flak gun's for base defense are actually worse than MG bunkers. Ever try decrewing one with quads or other stuff? It's really easy.
The problem is that a straight nerf to the scout car leaves it in a bad place. I can only be used to counter kubels if that is the case. Without the ability to push off infantry quick with flames its role in the early game is gone. Buff it, remove ability to transport troops.
Going T2 delays T3, going T3 directly means giving up field presence to OKW and possibly getting to the field at about the same time as the puma.
I understand your frustration with being chased back to base and burned down (this is really only an OKW problem), but nerfing T1 means it will be marginalized. Already Penals are borderline poor, Snipers are not as good as German version (except two man squads), and now scout car will be more useless.
Also base defenses of OKW do a fine job. Please post a video of Guards ROFL stomping the flaks. If I am decrewing someone's flaks the game has ended long ago. The ability of the base defense rounds to penetrate armor should not be ignored. It prevents T70's from chasing anything near the OKW base, but OKW does not have this problem on Allied bases with the Luchs. Their ability to shoot down planes, however marginal, is just poor design. Base defenses should not contribute to a players overall strategy.