I'm no expert in any of those, so the only thing I can offer is quick impression from reading some of the associated docs:
1, 2, 4, 7: con: Waiting to see any application in the wild
3: con: centralized core of the system
5: con: the existing applications don't seem appealing (e.g. no LN integration)
6: con: really hard to crunch through the marketing BS and somehow it looks like premined shitcoin?