Do you *like* the idea of downscaling gear / character levels, as seen in the recent videos? That'd probably be one of the key additions to the game in the next expansion, so... are you actually looking forward to it?
Example pros / cons:
Pro: downscaling will add challenge to leveling dungeons and non-max-level raids, that's great, instead of only having ~10 5-mans at max level, we'll have 50, more variety, etc.
Con: don't believe they can tune leveling dungeons and raids all that well, after all leveling dungeons are stupidly easy if they are done at appropriate levels right now, plus we saw all these dungeons and raids already.
Add your own, obviously.