I would bet my house that BE will not get onto EZY BFS routes directly, but the routes that are not head to head with EZY totally feasible, new routes for BFS and big holes in the routes map from BHD. CWL, EMA welcome back. ABZ welcome back. LBA ... well able to compete with Jet2. SOU, EXT plus winter ski routes.
LGW, MAN, BHX, GLA , EDI, NCL will be wise to stay at BHD unless they want EI to snap them up.