more interactive arrangement

hi there,i have been hoping for a long time for more interactive way to arrange my songs in cubase,
then recently i stumbled on a way shown in cubase hangout video
( it starts around min11.30) https://www.youtube.com/watch?v=91ByZHkzD20&t=1205s
it uses the generic remote in the device setup to setup the midi notes controlling the arranger parts

so i tryd this way of arranging my song triggering different parts in the Arranger Track with MIDI Notes
but there seems to be no way of recording your performance(the controller data),
only dialing manually in how many repeats each part should be in the arrange chain instead of just having a record button in the arrange chain.

it feels so much more musical to start the arrangement by just jamming than to be always arranging visually or by typing in repeats,

so my question is Could you please add a record button into the arrange chain ?
to record the midi triggering into the arrange chain and then later i flatten and work further on my arrangement?

on the same matter it would be so nice to be able to flatten after a specific bar number. then you could make few version of an arrangement all on the same timeline just after each other.

thanks kind regards
Fridfinnur