Which pickups are in yours, the 7’s (covered) or 85/15’s (uncovered)?
I have the same guitar, with the 7’s, and had similar findings where tone was concerned. The thing that made the biggest difference, also the easiest, was switching to a set of nickel plated steel strings from pure nickel. It added much more definition, cut, and percussive quality to the wound strings. Second, adjusting the pickups and pole pieces.
If you don’t have the 7’s, I have tried the 85/15 “S” version in other guitars, and felt they cut out much of the highest treble frequencies - the semi hollow body of these guitars do the same, so it could be too much of that effect at work when combined. I would look to the S2 7’s, or 57/08 or 59/09 if you want to try different pickups from PRS, if you go aftermarket from someone else, something with a good bite on top.
Keep in mind, though, there’s a personality to that body construction that will always be there. It will never be a guitar that has a lot of zing on top, or the punch to play low string riffy rock. It’s strength is sweet, singing midrange, I like to say it’s a guitar that sits in a mix, rather than jump out of it. It’s the guitar I grab when I want to impersonate a polite guitarist. If you have a drummer that wails on his cymbals and slams his kick drum, and a very percussive bass player, this guitar won’t be able to compete with that.
