Haven is an outrageous beast map, especially for a clan match.
Will wait on another opinion.
Nohope maybe less so, but still a pretty bad clan match map imo
Humans have more chance to win than usual on nohope, it's more balanced than most other maps.
Spookyfinal is not a good map to play clan matches on, really, it shouldn't be a game that the beast team is forced to sac rush in order to win effectively.
I hate spooky, but I only added it because Bendizzle and Cutter suggested it at the same time. It's not a good clan map, nor a good map in general, I'm taking it off the list.
Eden2 should be changed to Eden2_fixed to settle any exploit issues with summoners in the water
Eden2_fixed is not uploaded to the servers, as it's still in development for whatever reason.
Watershipdown2 should be switched to Watershipdownb (I believe that's the newer version w/o mines in the middle and other things like mist walls.
I chose the one that was in the Newerth rotation, and there really isn't much of a difference to warrant going against it.
I'd vote battlefront out but it's too much of a classic, and imo it can be won with a coordinated human team.
Battlefront is a classic and humans have more of a fighting chance.
Other maps I think you should consider:
alpenglow_b (Kinda a beast map though)
frogspath1f
mosswoods_sep
struggle (Possible exploiting through mid though, but I'd expect this to be kosher because it's a clan match)
Zaelor
Alpenglow is already on the list, frogspath and mosswoods don't strike me as match maps, but I added mosswoods, struggle sucks and is exploitable, and I'll add zaelor.
The only one I don't support 100% would be alpenglow, but it is a good map. Spookyfinal is not a map that I'd agree with to put on a clanmatch list, if you really want me to go in details I can, but I detest the map.
Waiting on another opinion of alpenglow.