I enjoy drawing the Paper Mario enemies in non-Paper style as much as updating sprite art. I can get experimental and draw something unexpected (P.S. I have been loving your Inktober stuff, as always!)
ABSOLUTELY. Super Paper Mario was my favorite just for the crazy cast of characters alone, and ever since then we've been getting "Toad NPC #122" and "Bowser enemy #284" over and over again... I just want to have some more whimsy in my RPG games!
A fact that's worth noting is that the Black Paint was gonna be the true villain, concept art shows that The Black Paint has a Phantom Blot-like entity that controlled Bowser, but Miyamoto was very strict on the original characters even if they were past friends and foes which gave Paper Mario one of the good charms.
I saw that concept art. I'm a big fan of allowing the games to expand beyond the core cast and exploring strange new things. I think the early RPGs were weird and interesting, but they've become more cautious and less experimental lately. They're still well written, but they lack the surprise element. Remember Queen Bean? Remember Grodus and the X-Nauts? I miss those days.