In the case of asset thumbnails, would it not be a better idea to direct the API to request a larger icon size? The icons in the new UI do not scale up well (e.g. 1080p 125% scaling, which is becoming more common) presumably because they are the lowest quality 150x150 versions. Upping the configuration to request a 256x256 or even a 512x512 icon would be a massive help in terms of increasing the visual quality. This is not specific to game icons but all asset icons on the new Creations Page.
One of the other things I’d like to add is that it all feels a bit big compared to the regular ROBLOX website layout, and it would be nice to see it reduced somewhat to be in-line with it (I don’t mean the outgoing 2011/12 layouts, I mean the current ones).
Finally, it would be nice to see the upload tool added back to the new page as it currently appears to be missing.