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Create a spreadsheet with a column for preference—one-time setup and then you're all set if you maintain it each time you get a game.
It only took me ~3 hours to grab the data from those 6 stores, so it's doable in one evening. If you don't have or don't like a spreadsheet, then a text file could work—start each game name with a number to signify your preference for it, and then it's always sortable in a useful way.
I made a post here a while back explaining how to grab the data in each place, but can't find it right now—so much for a prime use of forums, huh
My weird inability to play with TPP for long is a major cause of that—Control, Hitman, Tomb Raider etc.