I think Galaxy would benefit greatly from implementing an interface that's reminiscence of something like LaunchBox or BigBox, which has the capabilities to include custom themes for organizing your games. Technically speaking, LaunchBox has already achieved this goal through their software, so I'm not sure why GOG doesn't take advantage of implementing ideas that have already proven to be successful. Having the ability to organize and customize your games would have the potential to bring in a lot of new customers because no other company is doing anything similar (Steam and Epic included). I think this could give GOG a huge advantage over their competitors. Your team should seriously consider consulting with the folks over at LaunchBox because it would be amazing to have the ability to better organize my games without using third party software. It really is worth considering.

* Alternatively you could always just buy the LaunchBox brand and use their code for Galaxy. This would be an easy and relatively cheap alternative to building your own code from scratch. You've certainly got the cash to spare. =)