Webwork - 2:26 am on Oct 29, 2013 (gmt 0)
I think, on balance, this will prove to be a +. Having fewer hacked sites/servers is a +. Being a less appealing target to the mass of hackers will be a +. Having the ability to "be away from a site" (on vacation, etc) and not having to check for updates/hacks is a +.
I agree that some risk for conflict with plugins exists but I do my best to minimize my dependence on plugins.
My opinion will be subject to change with experience . . :-/.