[suggestion] set the A2 track to "record" mode as a default.
i think that this can help a lot new users to made comments very easly (and this can make Kdenlive the first choice for this kind of job.. also on youtube tutorials)
advanced users can disable the record control easly
P.S. the record controls are hiding the label of track (never set a label on my life because is too hard to assign track-label on complex project... is too hard to respect labels) maybe can be nice to expand size of track eheader when this control is displayed.