Oh no, first topic! :)
I am a recent import from GOG. I know their catalog pretty well, but there are lots of new (to me) games here. I'll know the catalog here backwards and forwards very soon, no doubt, but a few things might be helpful for other users as well.
An "owned" tag would be nice to have. I noticed a game I recently bought recommended at checkout during a subsequent purchase. Of course I know the games I've bought here, but as that number grows, this would seemingly be a helpful feature.
I enjoy having my library able to be sorted by purchase date, as is done here. However I also find it occasionally helpful to be able to sort alphabetically.
Just a couple of thoughts. I am enjoying the site! Thank you!