Where can you do like a "comeback to WoW" for like 7 or 10 days or w/e it is. My friend wants to play again.

scroll of reserection or whatever

there's reqs though, might not be elegible just gogole it

Get him to ask for free 7 days to see if he likes the new changes since he last played.

yeah you can send blizzard an email or pm a gm and ask for a few days game time to test out the new patch/expansion worked for me multiple times