The wario series has unfortunately fallen dormant in recent years. The warioware series hasn't seen a release in almost 10 years with the release of warioware fit (game and wario doesn't count). 

Wario land also hasn't seen a release for 10 years. With the release of wario land shake it in 2008.

Both of these franchises have both mostly been critically and commercially successful. I think both are due a comeback. 

Does anyone have any thoughts on the future of Nintendo's most beloved character wario.

I would like a new Wario platformer. I would rather the team behind WarioWare make a new Rhythm Heaven instead though.

Wouldn't that still be just to pair with Wario?

Super Wario Bros. It could work

Agreed,it looks like Nintendo is avoiding him since Game & Wario flopped,but he had some amazing games in the past.

There isn't really need for yet another 2D platformer (we're already getting Kirby, DK and Yoshi), so I doubt we'll be getting a new Warioland anytime soon. Wario Ware on the other hand, would certainly fit for the Switch. There are lots of hardware mechanics the game could make use of.

I'm not a huge fan of the character, but his games are always a lot of fun.

I'm still in disbelief that we didn't see a WarioWare game on the 3DS...
I think a quality WarioWare game for the Switch could be the party game they were hoping 1-2 Switch would be...
If they're going to give us more Wario platformers, I think they need to go back to the drawing board and make sure it's an experience that can stand on it's own next to Mario, Donkey King, Yoshi, and Kirby...
Odyssey was fantastic, the new Kirby looks like it's going to be great, Yarn Yoshi is super cute and apparently here to stay, and while there aren't too many people super excited about paying $60 for a port of a $50 game, Tropical Freeze is still an incredible game...
Wario is a great character with his own charm and he deserves a game whose shine isn't dimmed by a dozen other first party platformers...
How about a game in which Wario haplessly tries to pull off jewel and gallery heists with the help of his bumbling brother???

A new Wario 2D platformer in the style of Wario Land: Shake It! for the Wii needs to happen. As well as a new Wario ware. 

Amazing how many IPs Nintendo have for games from the Mario universe alone. Mario, Luigi, Peach, Toad, Yoshi and Wario all have their own lines of games. (Poor Waluigi)

WarioWare Smooth Moves 2

He's not Shigeru Miyamoto's creation, so he doesn't get much love. I'd love to see him in a main-line Super Mario game as well.