Definitely depends on your players. All of my skill changes were in direct response se to player requests, so fortunately for me I don't have that problem.It makes sense to me to! I just think it's not very friendly to casual players, people less confident in their math skills, and people less confident in their rules skills. And the complication is basically that the character sheet makes it easy to not really think about your proficiency bonus as a thing in and of itself, especially if some person or some website helps you fill it out. Basically I end up explaining what numbers to use each time we do a variant ability skill check, which is fine by me, but keeps it very much as a once in a while thing.