You know, here is the sad part, there was a time in EvE in the early and middle years where there was RP, storyline and very good player interaction no matter the type of path you chose to go. You could be pirates, anti-pirates, alliance warriors, miners, bounty hunters, all types etc etc. It was a wild and wonderful place to explore in. Then grew the multitudes of arrogant sociopaths to the game and as the years past it became nothing less than a craphole.
The difference here is with FD's method you can choose to opt out of that kind of thing once it starts here and it will because any game that is slick, cool and popular will attract the multitudes of those types as well. So to me, the split groups will always be a good thing, its just a shame that the all group option people have to accept the sociopaths as a standard and have them call it "gaming". The early days of E: D will be wild but as the hoards arrive the gaming environment will change. Personally I'm not optimistic that change will be for the good.
I can see the all-groups option being used until it becomes just too damn intolerable to have a good time playing the game with these kinds of characters.