Allow "Select an area" for recording
Whilst the new feature allowing you to record your screen is a step in the right direction. Being able to "Select an area" of your screen rather than just "Whole Screen, Application or tab" would be beneficial.
Either that or the ability to crop your video in the editor.
I'd say screen recording via browser will have functional limits compared to a screen recording software and thus likely not possible or too complex to implement selecting a part of the screen to be recorded (like in OBS), thus only screen, app or tab.
However this could be a POST EDITING feature, to select that area afterwards or zoom in to highlight portions.