Making an enemy's last item droppable is only achievable by events. (/late)
Which, if you're hacking FE8, I hear that learning to use event assembler is recommended because it can "do everything," somehow. Unfortunately, I have not been in the hacking community since the days of "FE7 is superior, why are you hacking FE8?" so this new breakthrough in hacking where FE8 IS actually superior is a new concept to me. lol
3. Make 2 allies have the "if they die its game over" thing
Also an event thing, I believe.