Hello ElArtista, and welcome to the forum.
As you have already guessed, you can define a Virtual Tag for that purpose.
(1) Define virtual tag
MyDisplayTitle with this formula:
<Title>$If(<Artists>=<Album Artist>,,{contrast: 60}" ("$Replace($Replace(<Artists>,<Album Artist>"; ",),;,",")")")
(2) Configure the Albums view to display
MyDisplayTitle instead of
Title (Display).
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Details:
(1)
* Open the Virtual Tag editor (Ctrl+O -> Tab 'Tags (1)' -> Button '[Define new tags...]').
* In the 2nd table, define
MyDisplayTitle.
(2)
In the main panel:
* Click on panel header 'Albums'.
* Select 'Customise panel'.
* Under '[v] show the tracks for the selected album or artist:',
next to '(o) directly ...', click on button '[Show settings]'.
* Under 'fields displayed', replace 'Title (Display)' by your newly created 'MyDisplayTitle' and [Save].