On the sound thing; definately in the camp that sound really adds a lot to gameplay, so looking forward to that.
Idea: temp ringing/deafness after shooting non-suppressed guns. Add in hearing protection items? Would really make finding a can an even bigger thing.
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Any chance that the '50 Stairs' blocks come back? Really miss them, especially the Corner (like a Half block with a Eighth block on it). Edit meant Eighth
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The '1 point per x' are a wee bit like 'earn xp in x by doing x', kind of. well.. maybe not so much...
But I really like the old 'get better at x by doing x' mechanic.
One reason is a "Golf Game" playthrough where your goal is lowest zombie kills. With the learn by doing system you get more gimpy as you go, making it really dangerous if even one z corners you after a while.
Still sort of doable w new system, just don't spec into any offensive perks, though it looks like a few general perks I wouldn't want to do without will also 'perk up' (heh) your offense.
And it's going to be really interesting to see how the Z's will come after an underground base now.
But I'm -really- curious to see how pathing will deal with a spider base with gyro only access.