The issue of being able to make repetitive short cuts on the offcut side (right) of the rail was one of the issues that led me to build my custom MFT rather than buy one. What really is needed is an additional fence on the offcut side of the rail that when calibrated to account for blade thickness allows for easily producing repetitive short cuts utilizing a stop flag on the fence.
I believe Festool is missing the boat by not designing one as an accessory that could easily attach to rear right corner table profiles.
In the attached photos I show how it was accomplished on my custom unit. The third picture shows a cut setup for 10 inches but you can readily see how you can reduce that down to as little as 1 inch and by utilizing a fixed mdf spacer between the flag stop & the blade I have cut as little as 1/16"