I’m not sure the force really falls under what I would typically think of as psychic powers, but I guess I can see what you mean there.
Control of one’s powers, control of one’s will, tomato, tomahto in my opinion. Point being, discipline and control are an integral part of the narrative of preternatural power of the mind. Jedi included. Certainly I can see the desire for the ability to play a character who has mastered such powers and is able to call upon them reliably. But that seems like something you could work into the psionic die mechanic. Perhaps a mid-high ability that allows the character to use the die without the risk/reward of the size changing. But I don’t suppose it matters, as they’re not moving forward with the mechanic anyway.
Sure, but like... The wizard already exists. Psychic-themed spells already exist. 5e is already big on reskinning. The mind mage already seems like a perfectly playable concept if psionics are just going to use the existing mechanics anyway.
I just don’t see the current path they’re going down leading to a way to play such characters that’s more satisfying than what we have. If it’s just going to be a bunch of subclasses with psychic themes and maybe access to some psychic-flavored spells... We already have that. I mean, I wouldn’t say no to more such subclasses, but if that’s all this 5-year process is going to lead to... It’s been a really long walk for a really short drink of water.