Agreed with Monsteri. INF maps just need to be fairly even and fairly tactical.
This has both.
I tried putting in that second route to make it more even for alpha, since bravo could just block that tunnel from below pretty much :L I think there needs to be something like that added imo... thoughts?
As for poly's, I wouldn't worry too much about that. It's a bug that I hope will be fixed soonish!