EAR 834p mods - specific mods, specific sounds?

I have an EAR 834p MM/MC and am using the MC section with my Koetsu Rosewood Signature, Jelco 750e, Sota Star Sapphire, Thor TA-1000, Quicksilver v4 amps and Verity Audio Parsifal Encores. The system sounds pretty great right now, but I'm wondering if I might improve on it with simple mods to the EAR 834p. I know there are many threads about these mods, but I am interested in dissecting a bit the outcomes, because there are certain effects most audiophiles might like but I don't. 

What I'm hoping to accomplish, potentially, would one or more of the following: tighter bass, less noise, more dynmamics, and even smoother  more liquid treble, and possibly even a more laid back presentation (perspective-wise, more rows back).

What I DON'T want to accomplish are any of the following: More forward presentation, more treble balance (e.g. the old "it seems to have more detail because there is actually more treble balance). I like the tonal balance where it is.

So I'm wondering if I should piecemeal mods possibly with better (but rich/musical) caps like audio note copper/mylars (if they would fit), or upgraded separate power supply, etc. But are there certain mods I should not do because I would lose the warm musicality or make it more forward?

Thanks for any thoughts! If anyone thinks I would see more benefit buying a SUT (budget would be less than $750 used), let me know.