Glide is limited by the limited pitch shift range of the default algorithm, even before you consider the desire to follow the timbral variation represented by a variety of samples. It's a pretty different consideration when you're just talking about subtle detuning, which is absolutely possible. There are also variations applied to envelopes with the vintage mode adjustments, if memory serves.
That said, I do tend to agree that it's not as simple as applying the exact same work and being happy with just that for the Prophet X, though the MPE support would be most welcome. There are just a lot of other opportunities to enhance the instrument in ways that are more uniquely suited to its architecture and character. Support for larger SSD storage for samples would be lovely, of course. I'm also still hopeful that moving loop points while preserving cross-fading consistently could be done if it were a priority, and I'd love to see a way to load samples and corresponding presets into available areas without the author having to anticipate where they're going to load. Then there are all the little nuisances, like wanting to see the name of a preset you're about to overwrite when saving (perhaps showing it when holding compare?)