Suggestion/feedback - customize folder pane when local folders and gmail (imap) is setup - Thunderbird

I am using both a POP3 account and a gmail account through thunderbird and getting on OK , however the gmail folders are at the top of the folder pane and I would like to see a facility of being able to move the folders in that pane so that I can have my POP3 email account at the top and move the gmail (imap) account underneath it instead of what it is at the moment with imap being at the top.