Actually I thought of something which might work to make tripmines a bit better. Make it so you can toss them a short distance to place them instead of having to do it at your feet. I don't mean a lot of range, but 10' or 15'. Mines can currently be air deployed, and then command armed, so I don't see this being a huge stretch. This would require a different animation of course (though there's no shortage of things being tossed animations in the game).