While I love the idea of having a frontgate coaster, I also don't really "need" it per say. I think you'd have to do it correctly, and while I trust they could, the real question is if they "should". I'd love a front of the park coaster that is right by the gate that isn't Invertigo though. Would personally love a ride that went in and around Timberwolf a bit.
I would love to see a new front gate in general, maybe update it with contactless/personless admissions booths.