Best upgrade path?

What do you want more/less of?

I'd start with speakers first.
My suggest: Dump the Totems for whatever you can get for em (I seea used pr goes for like $1500. Take that money, throw in a another $1K and get the Tyler's MTM design, Either floor stander or the lower priced book shelf model.
Now work around that. Next step is pick up a used tube cdp, for under $1K.
For amp, I'll leave that to someone else. The Tyler MTM's need the juice though.

Perhaps a little more bottom end, and a little more"oomph"
to the presentation. It's hard to single out what I'm looking for specifically because I haven't listened to
many other systems.

If your current system has what you've been looking for, then why upgrade? You wouldn't wanna get upgraders regret; parting out a system you enjoyed, then once its gone, kick yourself for parting it out.

I hear a little talcom powder can help the itching though. :)

Seriously, take my advice for what its worth. Keep the system if it truly makes you happy. No need to upgrade until an upgrade is needed.