I agree the best way is to have the tick-tock model.
I've talked about this as a release model previously with @alefattorini.
Having the 7.0 as a rock solid platform is the best solution I see so far. I agree with @dz00te, @mabeleira, @GG_jr and the others in this
The x.1 x.3 x.5 can have the extra features and x.0, x.2, x.4 to be the stable relese
Maybe we should vote for this ? 
BR
Bogdan