I think if the entrance building were to receive a new facade with a renovation of the ground floor, it would look and work much better. Any coaster that might occupy that front gate view would need to work in context with the entrance buildings without interrupting the reveal of the park too much. Concepts for this, like the one I drew below, would also require a high amount of trees to be cut down. I don't like that one bit. I may not be the Lorax, but I love trees.
In the spirit of putting my idea on screen so I can hate it for myself, I chose to create what you see below. Meet Timberwolf (or something else that could be wolf related), a front gate coaster that could give the park a reason to renovate the entrance plaza. It exits the former Congo Falls station, curves over the water, and heads up the lift hill, down toward the creekbed, over a new bridge, turns around in that middle planter, goes under the new bridge, and does some more stuff before heading back to the station. The pink is the coaster, the red are new/renovated building facades, and the green are a best case scenario for leftover trees.
Like I said, I really don't like the idea of having a total front gate coaster. This is just my idea for if it had to happen.