Eh... I already moved on to PC a long time ago for the most part. The only consoles I still play on often is my modded Switch 1 and modded PS3.
And even modded, I still buy physical games for those two. Mostly off of Ebay for cheap used games and Amazon or Gamestop when there are sales.
Which one do you think its more worth: A modded WiiU or a modded Switch?
Go with the switch. There's a lot more value and more cool things you can do with the system and it's portable so you can take it on the go. And the Wii U isn't a bad choice either as you can play Wii U, Wii, Gamecube, and emulate various other systems on the system.