It's certain the Go Karts cannot stay as not only does the coaster meander around them, but the ride's placement of height is also too low. No real loss to the park really as it was an upcharge attraction too.
Grand Prix is probably going to be one of the next things for the chopping block as it's an attraction with low capacity (300 PPH max), occupies a relatively large footprint and serves little historical significance unlike attractions like River Caves, Ghost Train, Flying Machines and most of the coasters. It's essentially an inferior version of Autopia.
I'd like to see maybe another dark ride type attraction at the park. But given the effort, lack of space and the continuing money struggles (even if they are slowly getting back up) I can't see them getting one for a while if ever.
It's pity the Trauma Towers and Space Invader sites can't be touched currently, as both would be ideal locations.