A couple complaints from a few internal teams over here in regards to the text limit for long answers. It looks like its set to 4000 for some reason, and they've fallen back to using Google forms or SurveyMonkey due to that restriction.
Is that limit going to be changed / removed in a future build?
Would recommend you vote to push it up the agenda. I have voted too. There is nothing on the M365 roadmap which suggests this so would also consider raising it at future AMA’s, and potentially raising a ticket referencing this uservoice to inquire.