I am a guitarist and bassist, but studied jazz and classical piano for 7 years. My piano skills remain decent, but were much better in the past. If more leisure time was available, I would prioritize making improvements on piano.
My main studio room has a Korg SV-2 and Kawai MP7SE, and there is an upright-styled Casio Privia (cannot remember the model) in my great room. That said, if I seriously dedicated time to daily practice, the addition of an acoustic baby grand would strongly be under consideration. I visited a piano store earlier this year to look at different models, but ultimately decided not to move forward.