I'm not sure they would drop the EDI or GLA route as they receive much better loads on them compared to the BFS and thats returning to x 2 daily in the winter. With the possible 4th A/C they may consider re-introduce GLA to a 2 x daily.
With the GLA, EDI and BFS/BHD routes this winter will be the test regarding amount of passengers carried by either WW & BE and whether or not BE arrival has effected WW as the rugby season would have started, and passengers travelling on weekends to see the matches. On such weekends the WW flights used to be full.