I am still looking forward to BfA, the launch day and the mess that follows during the first 2 weeks as we all scramble to level and gear and explore all the shit the game has untill raids launch is always good fun with guildies. Then when raiding launches we have fun there. After a few weeks is when we get a bit of a feel of expansion goings and the such and when blizzard announces the first patch we get a good idea of the expansion in the long runnings of it. Thats when I decide if its good or shit.
Untill then, I am pretty neutral about BfA, storywise it could be really fun, but the tanking classes are a lot less fun on the beta than on live from my own expriences. Hopefully some further tuning and gearing will fix that after not to much time.
Also, I have been neutral about every expansion really. Never get hyped for anything. I just check things out when they are there and go from there. No reason to go mental over things that don't even exist yet.