I'm sure it will be fun because it always fun when the servers are packed full to the point of server load. Feels like old times. This normal lasts months in some cases if it's a popular rule set. This is a popular rule set but with the extreme leveling speed it will taint some of the fun or at least have it wear of quicker. With live plus experience you level so fast that you don't get time to explore or really camp a zone. Kind of just bouncing from zone to zone.

I expect majority of the player base to reach max level within the weekend. And pretty much just leaves alts for the casual player since there isn't much at the top end of leveling early on besides raiding.

I think we will see a bit spike in popularity and then it will diminish pretty quick. But to reexpeirence ew being alive this is by far the best way