Give me wrong example that the Tasha rule of 'put your stat bonuses where you want) fundamentally changes how you can play your character. As of now, I can play a dwarven sorcerer, a halfing warrior, an orcish bard, etc. Nothing about stats is stopping me from doing so.
I can't give you a perfect example from the top of my head actually. I am sure there are some still. But what I can recall immediately is that it lets you bump both of your non-combat stats. +2 INT, +1 WIS for example. It can open up some paths for multiclassing that were never as strong before.