@pee
The route selection quite clearly was driven by Vueling's choice of routes. 1:1 copy of their BRU network pretty much.
SLOT COORDINATION BELGIUM
If someone can enlighten me, how Ryanair can get the necessary slots at BRU, when the airport so far completely unaware, that would be handy. Is slot coordination in Belgium secretive so an airport wouldn't know? I cannot imagine that Ryanair would first announce routes and frequency, and then try to get the slots retrospectively for it...?!