I played a3 wasteland for a long time and biggest issue for me is the way that shops function
I listed some improvements that could be helpful
1 ability to sell all items from the ground there is always so much garbage around shops
2 ability to sell items from containers around shop - crates and vehicles
3 instead of instant equip items after purchase putting them in store crate or movable crate(for cash) or vehicle near store
also random rotation of items and vechicles could be cool
best equipment system implemented i saw in cti- Benny edition