Budapest - Not sure I would hold out for this as FR had their usual landing fees spat with BUD, quite a few routes were dropped as a result
Warsaw Modlin - Announcements today about routes from there plus Krakow and Wroclaw all of which could include routes to BRS
FR do seem to have their favoured airports in UK for expansion, which seem to be EDI, MAN, EMA and LPL. My local FR base at BHX has stagnated with 4 summer based a/c and around 20 routes for the past few years with no signs of any significant expansion in terms of a/c or routes on the cards. Will be interesting to see what happens at BRS, perhaps there are a load of new FR routes to be announced?