[peram1]

tars: "... Probably my wish has something to do with my using tmm as a stand-alone movie organizer in place of Kodi..."

so do I - 

"... If such a header is displayed at the top of details tab (or for all tabs), you can get a quick and concise summary of the movie while browsing the collection without having to look around or open several tabs..."

BRILLIANT idea ... always missed that and got annoyed about going to another tab  knowing director, writer and the main actors ...
if it gets too crowded on the details tab rather put all the IDs, production ... onto another tab ... 

.ps have no resolution icons neithers on details tab