Currently you can only request a text input from the user on a button press. Would love to see this expanded to integer, date/time, dropdown etc. In that way it will become more user friendly and can easier be aligned with external systems.
Looks like the same idea as: https://powerusers.microsoft.com/t5/Flow-Ideas/Create-multiple-input-types-for-buttons/idi-p/33695
Admins, do you have the power to combine these two suggestions?