Peak Brum?...
It appears apparent BHX in particular was highly unlikely to support both a major MON base & a new & expanding EXS base..
With the expansive EXS operation among the larger airports BHX was the one in line for a noticeable shake up/shakeout.
The NAX & VLG withdrawal probably bear witness to a finite market for BHX & recognition that one dominant albeit expanding player in this segment will prevail.
Some posters wish-lists for destination provision & frequency must undoubtedly be disappointed.