Thanks for the feedback!
Cacowad: the map wasn't 100% finished at the time of uploading so there are a few things that definitely need to be smoothed out. The flags at the start weren't misaligned for me, I'll have to check that out. Thanks for your time!
Egregore: As far as making the map vanilla compatible, I'm totally on board with that if you think it's good enough to be in the map pack. I appreciate your willingness to compromise, but I'd prefer to work within the same guidelines as everyone else. Also, to be honest, I'm not sure if this map is good enough to be the final level - another reason why going vanilla sounds like a good idea.
I'll keep working on it to make it more vanilla friendly!