Random Questions

[Bokya]

Hey all, just wondering about a couple things, as my group is going to be playing ATOE tonight.

1) When you purchase a Lair card in Co-Op mode, can anyone in the party activate it, or only the buyer? If only the buyer activate it, does that mean everyone can own a lair card of their own? Also, can you replace the card if you don't like it buy buying another lair?

2) Are there any movement or combat alternative variants out there to avoid overall dicerolling? I was thinking of allowing you do deal 1 automatic damage by removing 3 dice, at the cost of the enemies getting the right to do the same, but then Karl's ability would be too OP. For Movement, I'm considering a rule of Roll a d6, or move either 1 or 3. Opinions?