Oh, a hero arena; yea, I see.
Well, I'm not really a big fan of hero arenas, mostly because all the hero based WC3 maps use the sucky STR/AGI/INT crap.
If we had a cool stat system like the one my map uses (no, I don't like it because I made it; I made it because I liked it. Hope you can see the difference
) and with cool heroes whose spells synergy each other (I have not seen your spells), I'd definity play that map.
Well, considering you're good at coding, I think it'd be easy for you to make something like that. There are my ideas for further improvements