Playing rhythmically accurately extremely lightly is one of the hardest things to do, particularly at the wrist angle that piano playing forces on you… Accordions have the wrist in a far more natural angle and very rapid runs and arpeggios seem a lot easier (plus the much smaller width of the keys is a big help) plus your finger strength has little to do with volume and tone.
But a velocity sensitive keyboard needs a fair range of force from you to deliver good dynamics and rhythmic accuracy. Sure, setting the curve to light allows you to appear you are playing harder, but also makes playing quieter much harder, as there is so little range between loud and soft now. I tend to find medium curves work best for general sounds, but piano and Rhodes work better for me on hard curves.
The trick is to not set your keyboard’s overall velocity to one thing or the other, but program the curve on a registration by registration basis if your keyboard allows it.
_________________________
An arranger is just a tool. What matters is what you build with it..!