I'm not really a fan of the Aberrant mind sorcerer. I think that the 5e D&D team has been pushing the whole psionics are from the Far Realms a little too hard for my tastes. It would still feel IMHO a little too limited in its scope. Like here are all the different subclasses you can take for being a wizard, a sorcerer, a warlock, a bard, etc. but then the only way to really build a psion would be to take the Sorcerer, pick the psionic spell list, and then pick the single subclass. It would be almost like having the only way to play a druid would be to play a Nature Cleric who picked the Primal spell list.