Ah, no offense but I also expected that it'll get rejected. You need to work on it more because you are actually providing a tutorial template in the maps sction but your terrain, triggers and other stuffs in genera are poor in quality. You should improve it more, for the terrain, try giving it some more raises and lowerings or to make it short, raise/lower tool. It could also use some more wise placement of doodads/destructibles. Remember, you can also use Special effects as doodads or destrcutibles by creating a new custom doodads/destructibles and changing the model into a Special Effect.
For the triggers, I cannot say much but what Kobas said is that your triggers are poor and leaks. You should go to the WEHZ and try asking for help on making your trigger much more efficient.