I don't know if I'm asking the question properly. If not, I hope you get my drift. I don't know how to make myself any clearer.I guess I mean a piano with as light a touch as I imagine Mozart's grand had, compared to, say, a regular Steinway 7-footer.
Light touch will make transitioning from different pianos a pain.Heavy touch will make fingerwork a pain (especially if you just use fingers).Practicing on a heavy piano then playing on a light one will feel incredibly free.Practing on a light then going to heavy will feel like moider.Heavy to light you might play a little too loud.Light to heavy you will play too softAnd it goes on.Find a medium keyed piano and make life simple.