Hi J-D, I can tell that a lot of your system's magic is hidden in the supports, tweaks & vibration control shamanism that you master so well.
For analogue you may want to try a pro-ject (or its local equivalent), a rega (latest version, I agree), VPI... However, with your mastery of the tweak, you may want to try a bigger suspended deck. There's no difficulty there. Outboard phono will be tougher. IMO your ears & system require a very good one. Unfortunately, the price difference b/ween "good" & very good is high; the Aesthetix, FM acoustics (et alia) of this world fly high.
It also requires an extra cable -- BTW I tried valhalla on phono today & am suitably impressed.