SqB question

[Ubercat]

I'm pretty new to Tiller games, having just recently bought Smolensk '41. I'm leaning towards getting Advance of the Reich, or maybe Eagle Strike as my next game. I just have a couple of questions.

I've been looking to see what mods are available for SqB and the available info doesn't seem as clear cut as that for PzC mods. I can't find a good website, like mapmod, that focuses on SqB. Can anyone recommend good sites that pretty much cover it all?

Also, are there any significant, outstanding issues with particular SqB games, or with the system in general? What I mean is, are there weapon systems in the game that are clearly overpowered, or underpowered? I read a post somewhere, in which a player was annoyed that mortars (in Dien Bien Phu) were more effective at killing troops in a bunker, than in the open. I just want to avoid getting into any situations where immersiveness is destroyed by annoying glitches.

Thanks!