Make rts games more fun xD!!
Hero units like in lortbfme2 or the original kingdom under fire games or even dota with unique levels and abilities that you can learn by gaining experience points throughout the game but at the start of each game the experience is reset to 0
Adds an extra layer of tactics and can really sway a fight due to their abilities and toughness
Im not sure, i guess it could add a learning curve to the game but thats where a lot of the fun is in rts games
dota - http://www.youtube.com/watch?v=mt_NK_pTxr4
lotr bfme2 - http://www.youtube.com/watch?v=Zjf-Yoia-7I
kingdom under fire - http://www.youtube.com/watch?v=hIVpvpsbngc