Galio QoL Idea

I think that a nice QoL buff for Galio would be to make his ult unaffected by tenacity, it's very annoying to have an enemy be able to come at you near the end of your ult and CC you to death while you can't really do anything. I don't know how severely this would affect enemy gameplay clarity, but it seems like this would only really matter in high skill level play where you can react in the tiny period where you aren't taunted but Galio is still channelling.