Ice crashes at around the 12:35 mark almost without fail. This is a known problem, it should really be removed from the rotation until it's fixed, to stop wasting time and stop the "vote ice and leave" mentality.
Discuss.
Ice is back in the rotation, and none of the problems mentioned throughout this thread were at all approached during it's time out of the rotation. I'd have thought this time, though due to the map causing crashes, would've been taken to improve the map's failings.
Intel is impossible to get. Due to the split between surface and ground, the pieces you need to complete a chain will invariable be underground where you cannot get them. Couple this with the difficulty in maintaining the power meaning you can't access the data consoles that some of the chains - if you complete them - ask for, as well as places being bolted down at start, means that the IO role is next to useless.
The underground. It's a mess and favours xenos, due to all the corridors and the impossibility to lock down an area due to all the flanks. The limited access points that xenos can camp or cover in eggs/huggerholes makes this problem worse, as well as them not matching up. It also completely removes the use of all the marine support abilities.
The snow. Originally put in as what I assume is a limiter on how weeds can spread (similar to the grassy ground on LV), it serves no purpose in hindering xenos due to offweed regen and has minimal slowdown for them due to abilities, and completely cripples marine movement by limiting them to common paths. The slowplow for the tank does not at all fix this problem for marines, as it is a waste of a slot.
Too big. The top map is sprawling and way too big, and minimises contact for the xenos to only when they want to fight. Half the map, at most, is used commonly, with the majority of areas (disposals, Hydro west, northwest) being completely unused aside from runners or lurkers hiding, dragging critical/dead infected marines to stop recovery, or to hide tunnels. Engineering is on the other side of the map and cannot be supported or maintained meaning it's useless as an intended objective for marines.
Any 'challenges' that are implemented as hinted at above are not going to impact xenos at all, and will most likely make the map more difficult and less fun for marines, not that it's fun at all already.
Trijent suffers from most of these exact same problems, devteam don't seem to be learning from their mistakes. There's a reason the 'Vote ice and leave' mentality switched to Trijent when it was out of rotation.