I thought it would be good to come up with some really quick wins for the creators to implement that could increase enjoyment of the mod. I'll start with some of my own but others feel free to add more in the comments.

- Make the skill auto-level additive. Currently, the automatic skill levels erode into the xp you've already accrued in a skill. This disincentivises you playing around with other weapon types as you're better off focusing on one and getting it as high a level as possible.
- Make it easier to level up skills. Currently you can only really max out one, maybe two different classes by the end of the game. If you could get to max level in three or four, you'd have a multitude of different play-styles for the last, toughest waves which are the most likely to shift the map and therefore require a different class.
- Make the game modes shorter but more intense. (This one is potentially a little harder to implement) Currently games drag on for 1.5 hours or so, which is just too long, especially when you have to join early to stand a chance of having good enough gear for the last waves.

These are three that I've come up with off the top of my head. Does anyone else have any other ideas?