With that in mind, if we say it has a (being generous) 30% chance that it wouldn't get approved, are there other features that there is widespread consensus on that have a 90-95% chance of getting approved?

In a nutshell: Will this take time away from Communities or SMT's because that's the stuff EVERYONE wants. Why not just push full Steem ahead on that and after that's out we tweak all this stuff.