They are fine with people rejoining the game and as such they need one toon in order to join there freinds right away while they know some don’t want to do the old content and want to just join there freinds. As such allowing one boost to do that is good for the game. In fact I know tons of players that would of never tryed or started classic without it. This is the exact reason it is there to get additional players playing. Once you have that one toon able to play thou your on your own if you want more. As such those boosting do not gain significant advantage. They only get to the min level needed in order to join there freinds right away a single toon with vary basic gear.
Adding more ram to the servers would do nothing this has already been stated. The issue is partly a network issue they already have scalable servers with all the ram they need. The data being handled between the servers to not get lost is the issue as every time you make a server scale larger there is more data moving around and as such eaiser to get lost or bottlenecked. This is one of the points of issue not the only point as per blizzard.
Rfd should happen and it will there is to much want for it for them not to add around icc if not uldar.
Servers blizzard already confirmed will be unlocked once they have reached the level they. Need to be at. Will note for the mega servers they have said they don’t want them that size. As such thou not stated there likly to not unlock untill there down to the size of a normal server this was hinted at.