Swap macrobombs in surplus crates for a box of microbombs.

[Nidabutt]

Agreed, surplus crates should offer a range of options when opened so you're given some freedom with how you wanna go about antagging that round. The surplus crate to me should be a random option when you can't decide on a gimmick and should just give you a bunch of random, fun and potentially murderous toys to try out and play with, a microbomb eats into the variety of the crate way too much.