As per Megaglest:
https://forum.megaglest.org/index.php?topic=6529.msg66149I particularly like the concept of HP costs for attacks. This can make a cleaner suicide attack (no splash needed, no worries about the attack being weaker than your unit has HP, etc). As well, if combined with stealth units, I imagine you could make a better mine unit too (then again, that would be a splash attack, but not the point here). And this is just Military-esque ideas! Looking at all mods in general, magic attacks that forfeit your life to cast spells, or spawning pets at the cost of your health sound fantastic.
Relatedly, he also posted a bug fix for morphing with units in cellmaps. Not sure if GAE has this bug anymore, can't recall the last time I played a mod with morphing buildings
.
The spawn attack thing may also be interesting (abet, I don't completely understand how it works).