I do think a filter would be great; however, I also know that it’s not trivial development work. I don’t even know if the various store entries have the yoyo stats stored in a uniform database structure to create that sort of filter.
But it would be fun. “Give me all yoyos that are currently in stock, with a diameter between 55 and 77mm, and a weight no more than 66g”.
Could totally be useful.