Eh, I think you're underestimating how much buzz reopening the Sky Tower would create for SFMM. It's basically the symbol of not just the park, but the SCV. Reopening a local icon would definitely create a splash on local news. Plus it gives people something to do in between coaster rides.I'd have to admit, I doubt there's a huge community of GP park goers who are clamoring for this to be open. Enthusiasts, sure, but the GP likely not so much.
That said, getting it open would accomplish a few things: more attractions open in the park, the goodwill (and publicity) of the enthusiast crowd, and it would be a symbolic gesture of a larger commitment to the park as a whole. It is a pretty big symbol of the park.
If SFMM goes through on improving their food offerings and reopen the Sky Tower, it sounds like they're on the right track. It's a start. They need to spruce up their infrastructure and add a few flats as well.