Me I would've loved to see a Launchbox plugin for Emby media server, to be able to use your games within emby
A easier way to manage music per games and platforms.
And the ability to point multiple games to one file. For example multiple games share the same music and video
The possibility to have multiple layers on logos
For example I have three zones : Center (who's in the back) the top and the bottom. This way I can do Something like : Duke Nukem 3D at the bottom I add the logo for the mod or addon Exemple : Plutonium pack (or I can put it at the top) and At the top or bottom I can add the version for example. So maybe the ability to add Logo or text with the choice of the font, size, color, drop shadow, etc...
And finally as you did with retroarch, put Parsec (maybe Discord too) natively in Launchbox