First Change: MORE MAPS
we've reached the point where cataract is unplayable. Unfortunately, it is also the best map. Exile, Leviathon, Prison are okay. Mandala is TERRIBLE. Zikkurat and The Brothers are fun, but wicked laggy. Crucible is the ONLY 2v2 map. version 1.2 MUST have at least one new map, preferably one new map per player count.
Second Change: An option to get rid of backgrounds.
What I love about Exile is the lack of overly brutal backgrounds. Just space. I know that some people enjoy the backgrounds and that is fine. But I would really like an option to turn them off. This way I can increase my sim-speed and play some of the larger maps with a lot less lag.
Third Change: Map Editor
I know that this is slightly more difficult because of the way the maps are viewed. But I think that custom maps could make this game 50 times better. I think the map making interface could be pretty good. one could place all the towers, give them a war score birth time. Make portals with a quick reinforcement path for each side. drop some flags, gold mines, shops, all that jazz.
Additionally, you could have rankings, and approved maps which can be downloaded from this site. I just think that alone increases the lifespan of this game by 10 months at least.