I think for Sorcerer they chose 10 things that would materially affect the battlefield and implemented those. I could see them expanding the list but we are talking adding development time - is that a good ROI just to have an expanded wild magic table?
Well, I know it's too late now but I much rather see them implement things like the wild surge table fully(or equally as good) than adding weapon abilities out of nowhere, or change spells that doesn't need change, even after they saw what we felt about surface creation with cantrips.
Especially the last thing felt like Larian saying: So, we noticed you guys don't like the surfaces too much so we reduced them quite a bit. But thing is, we like them so...f you!