Resupply and rally are start of level missile and health refill, respectively. Former's tempted me a few times, but I only very rarely have a mech that has enough health heal pickups don't top it off or near enough, which makes the latter pretty marginally useful... and if I do and I'm taking enough damage that I'd get much out of it, I'm probably dead even with the heal, ahaha.
Pretty uncommon to have enough capacity and be using enough missiles the situation isn't more or less the same, really. Just more common, heh. It'd be a lot more tempting if I already had in the wrist, actually, since I wouldn't be piecemealing out missiles to crack shard blocks and might be using them more actively in actual combat...