I know I'm late to this thread but I'd love to see an HD remake of both Size Matters and Secret Agent Clank, much like PS3 HD ports of the God of War PSP games. Idol Minds is already working on Deadlocked. If you want the PSP games as well you should email them and let them know that you want to see the PSP games converted as well.
There is PS3 releases of Metal Gear Solid: Peace Walker, God of War: Chains of Olympus, and God of War: Ghost of Sparta. So yes.
But to release SM and SAC on PS3 I feel like they'd have to legitimately remake the games and not just make them into HD collections. There's a significantly lower polygon count in SM and SAC than in the PS2 games. It looks fine on a PSP, but I can't imagine it looking anything but awful on an HD television. We all know the direct port didn't look so nice on PS2 already.
I've played the GoW PSP ports and even though you can tell they are sourced from a less powerful system (they don't look as good as the PS2 ports) they still look really great. I'd be all for a nice port of Size Matters and SAC
On the PSP i thought it was very enjoyable, I put the disc of the PS2 port back in the box really quickly. But I would only get this one as a hard copy. Its probably never gonna happen, but I'd still like to see the remaining PS2 Ratchet games as an HD Classcis bundle