If Disneyland is hell-bent on having an arcade in Tomorrowland, why not make it something truly unique and an "experience"? The current one doesn't offend me, but they could do better than something you'd see at your local mall in SmallTownWherever, USA. No need to have the deer hunting games, or the grab-a-stuffed animal, or all the rest of that junk.
What I propose would be enclosing the lower level, leaving the entrance in front, by the Star Trader, but with a new interior wall separating their spaces. A sign outside would identify it as "Flynn's: Home of TRON" in the classic movie font.
Inside, the design would be "sleek, Blade Runner-futuristic", black walls with futuristic lighting structures holding black lights, red, blue, and green neon tubes lining them, and perhaps black-light re-designed posters of vintage Disney films that fit such a treatment: Alice, Fantasia, Tron of course, Something Wicked This Way Comes, 20,000 Leagues Under The Sea, etc etc.
The games offered would be a mix of retro classics (X-Men arcade game, Pac-Man, Centipede, Donkey Kong, Space Invaders), custom-designed, Disneyland exclusive arcade games (a retro-style Woody's Roundup game featuring Woody and Jessie trying to save the little woodland critters from an abandoned mine or a runaway train), a Haunted Mansion side-scroller, an Alice In Wonderland game, and a Virtual Space Mountain ride-simulator.
Besides these, the "stars" of the location would be a row of 5 or 6 Tron machines against the back wall, enough so that guests aren't waiting for just one machine to play. The X-wing fighter above could also have it's space enclosed, windows darkened, and lit up dramatically from the sides, hovering over the arcade. Along one side wall would be the "prize booth" as featured in most arcades that spit out tickets, but this would be a merch counter. It should feature exclusive Tron merchandise: Flynn's and Tron shirts, McFarlane style movie figures, art prints, maybe even "laser disc" frisbees that glow in blacklight/the dark.
This concept would truly enhance the area, I think, and bring something unique to the park, with some "Disneyland only" offerings, while still retaining the basic space as it exists today. Folks looking to only play arcade games would come in and find things to do, while "enthusiasts" would find a unique space with unique offerings. Your thoughts?