This mod is neat indeed! As of it with no offence can I make a few suggestions?
1) quiver is indeed looks cool for even with 3-5K arrows sounds fine in rpg, but mags for bullets with like 3-4 different stacks of 1K ammo sounds a bit out of hand. More like a carrying vest with mags rather than a single mag. Maybe it's just my gun nut OCD.
2) is it possible to show up on icon of builders storage not only the current selected block, but additionally an amount of blocks on hands similar to vanilla? I build like ALOT and I love this idea of a one button "paint" pallet for all my blocks, but the number of blocks is only visible inside of an open storage inside the inventory.
3) I can't put my slime inside the misc ammo pouch. Is it bug or slime doesn't count towards ammo in this mod? Or it's not in the misc category? I'm totally cool with that, cause my ammo slots are empty anyway now, just wondering.
4) Maybe add an ability to place fishing related gear in the fishing belt? Like hooks and lines? (especially if it will support Tacklebox: Modest Fishing Content, cause it has a LOT of different fishing "baits", that are rather accessories, than baits and some additional lines, hooks and reels).
Maybe I forgot something from yesterday, but I love this mod a lot!