Lol, I would imagine it's not that difficult to buy an office PC and throw a graphics card in it if finding an itx case and planning a build sounds like that much of a headache. At the point where you want a machine so specific and you are tired of building PCs why bother at all on atheistics? Just buy a console my friend no point in doing any sort of planning. If you want a machine that looks nice is small and runs multiple emulators then I'm pretty sure you are out of luck... Wiis be cheap and don't look bad and you can mod them to run any sorta games just by getting homebrew on a thumb drive. Small form factor cases and the hobby of building computers are fun for some but it's not everyones cup of tea.