I'm new, and this might have been requested already, but I think having subdirectories in your collection would be super helpful.
Like the main collection page is just a list of consoles. Click on it, then it takes you down a level, to hardware, console accessories, games, etc. Then you look in those directories at your specific games.
That way you can browse by console without having to do a search/sort and it would he more organized than having just a large master list with several systems/games/etc. All just mixed together in alphabetical order.