Your mods are my absoulute favorite and I'm glad I can give useful feedback!
I'll just share a few of my thoughts while you think about it. Shotgun shells are one of the very first techs. They're extremely cost efficient and quite important if you play with a lot of biters. I think they should stay accessible early. With some mods like AAI industry you only have burner assemblers for a while so you wouldn't be a ble to craft shotgun shells until you get a bunch more techs. Unless, of course, you have a salt patch closeby. I personally don't like to have too many different resource patches that I only need tiny amounts of, so I will probably keep salt patches disabled. Hopefully I will still be able to craft my precious shotgun shells. Looking forward to what you decide on.