Not really a boost, since most of PSP games are not that good or are remakes of PS1 games.
When Pandora will get native 3D games that are better than PSP ones, then that will be a real boost to the Pandora!
Quit lying the Psp has many awesome games (in my opinion) I like Final Fantasy Dissdidia, Daxter, Sonic Rivals, Ratchet and Clank Size Matters, Tekken Dark Resurrection, and God of War Chains of Olympus.
I can't see any game of this list happening for quite some time because the only one I'm interested in myself is Tekken (and it's the only game I own from this list [though I could get the jump'n'runs from a friend]).
However, I have no idea how complex tekken is, how much you could abstract it etc. But iirc it has FMVs which would be missing and it was fairly advanced graphics wise (it used some neat tricks, coding-wise) - so I'd assume that the devs tried to optimize whereever possible and this might mean a lot of VFPU work (which is one of the slowest parts in the emulator - and almost non-existant so far).
The emulator won't be out for some time, but I will probably release snapshots once my pandora arrives. I did lots of work when I got my Pandora emulator working and dropped the interpreter, but the OS / Firmware HLE broke with the continous changes in the pandora kernel interface and changes in my own libraries - and rewriting the input system numerous times was really annoying and I wasn't motivated enough to rewrite using SDL yet (because I hate SDL - but that's another topic..), rewriting for my new libraries is / was also a lot of work.
I agree with KodeIn btw. It's far more important that good Pandora games are created and this is why I will work on the things I have ported or written month ago which broke now (mainly Guitars On Fire & SDK Samples and a few SDK Tools).
The PSP Emulator is more of a proof of concept so far. While some applications run as good as on a real PSP, it's probably too slow or unstable for most (all?) commercial games. However, the things running are probably not what you want to use.
[Note: I'm not saying that the stuff you ask for will never work, but it probably needs lots of optimisations (probably case-specific) and hence lots of time and work]