I dunno, but maybe TQ is a bit problematic to patch like that. There're a lot of things actually, that show TQ's age next to e.g. Grim Dawn.
Visually, gameplay-wise, and interface wise, TQ has aged remarkably well. Perhaps better than most other videogames out there. It's in things like compatibility, and in-game flexibility that its age shows; like how you can't use portals to spawn new instances of cleared maps, and have to exit and restart.
By the way, I just booted Ragnarok for the first time, and I expected my Legendary characters to gain a few levels upon first play, or at least get some skill and stat points from supposedly completed Ragnarok quests in Normal and Epic. Nothing though,.. how does that work?