I 100% agree, sadly I don't think anything will be done with this area until they decide to redevelop that area. I really do think they need to either reopen the gate when WhiteWater World is open, or even reopen the shop in the old Thunderbolt station in the summer months and use that as the gate. I'd love to see another flat ride in the location of the flow rider / trolls area to open that part of the park again and hopefully draw some more crowds down to the Gold Coaster area. Once this is done, you could easily open up the shop again with the new (well old as it was used in the past) gate to WhiteWater World in the summer months. This would honestly go perfect if WhiteWater World expands onto the old Thunderbolt site as originally planned.
For when it comes time to removing Gold Coaster though, it's not just the waterpark that is in the way but a large amount of Back of House areas are directly underneath which would make it slightly more challenging too. But I really hope this section of the park is the next area to be looked at either before or after something is done with Motocoaster. I have 100% faith that the current management will do something, it's not a matter of if but a matter of when.