"Enabled by default" on a per field basis

Issue Summary

I am working on a site that has one complex content type with a lot of filtered textareas and a colleague decided to uncheck the "enable by default" on all filters because the page was a bit heavy with all of the rich-text instances there.

That was fine until I was working with a content type that has only one body field and I actually needed the rich text editor and it annoyed me a bit.

I know this can also be set on a per user basis, but I think it might be a nice feature to be able to override the default state of the editor on a per field basis. You could have a configuration option for filtered text fields in which you have "Default behavior", "Enable by default", "Disabled by default" or something like that