Good Map, I like the idea of keeping it simple. Only a couple issues Id think would make it a more playable map.
1.) The statue in the middle of the map, players can get stuck in the rings (by jumping off from the blocks, or walking across the staging to it, and crounching once there.
2.)Spawn locations are really important in iCTF, as any team with skill, will know them and not allow you the opportunity to respawn by placing players in those areas. So my suggestion would be to create at least one or two more spots per side that is located slightly outside the flag zone to prevent the spawn raping issue.
Well done.