Yeah, I know of the various Eventide pedals, very neat stuff. Likewise know about the Pitchtraq.
I agree about keeping the real guitar tone, which is why I was thinking of the POG, which, IMHO, might be the best way of having some additional harmonics added but still ending up with a natural tone.
Anyways.. having looked into this a Bit more, I've decided to keep my Digitech TST-24S.
It'll sell for next to nothing, and shopping pedals will cost a whole lot more, likely without buying me a better solution - the TSR was sooo wanted off the market by the Harmons, because it was too close to an Eventide 7000.
I'll just stick with the programming, and have it all available - should I need it
Same thing for the analog reverb, which I've now also researched.