That is part of it, perhaps, is that I don't think they were for automatic weapons? I mean, doesn't make sense when they already come with burst function, which largely accomplishes the same thing with better results. And definitely not for sniper rifles, though a fully modded Spearhead might work in some cases. Looked at the same feats when they came out and wondered what you are, anyhow, and came up with that they are mostly for pistols, normal, energy and chemical for the most part. You get a high enough small arms skill and the aim penalties are going to be negligible when using these feats. And hitting someone with 2-3 lasers, or acid blobs, with one action has to be fairly useful.
Expertise afaik is working fine, near end game, was still using a custom 5mm Jackrabbit to extreme effectiveness, thanks a good deal in part to the straight 25 damage increase from Expertise.