Autoblog under Network Admin with many sites

When in Network Admin and using Autoblog > New Feed does not load if there are many sites (10 000) as the target blog takes too long to populate.

This kinda makes this functionality useless as the idea behind using it in Network Admin is to be able to see and edit all feeds.

Maybe an ajax search type load would be better which could then load after the page appears.

The feeds also don't appear in alphabetical order and makes it difficult to find a feed to edit.