Definitely! Clark is one of the best devs I've seen in terms of quality and speed and listening to his community. I can honestly see this becoming a huge contender with major game engines, especially if people can publish to many platforms - it's going to get a huge voice and speak for itself.
Retro is the future and I'm sure there will be a resurgence of PSP with this engine - at the very least, it will draw the PSvita crowd for sure.. It'll be great to see your PSP creations.