QOL Request - Tools: Unified Username Checker

Another Thought/Request regarding the tools!

When it comes to the username checker, I think it would be very useful if we could check all platforms at once on the web UI. Or have an option to select platforms to check, with them all disabled by default so we pick them.

My thought process here is that I have gone though a creator rebrand before, and it definitely sucked having to keep hopping between browser tabs/windows trying to find a new handle all platforms would allow me to have/keep.

If we had this tool unified, it would be more efficient for those types of scenarios, as when we are looking for a new handle/brand, we are looking to get that on many platforms and checking all at once would be very efficient.

Thank you for your consideration!