7ER FOs seem to be moving on to bigger and better things and there are very few pilots on property moving into the 7ER FO category. The 330 will siphon FOs from all narrow-bodies and 757s are (slowly) going away so I think the trend will continue for a while.

I could be wrong but I continue to move up in the DTW 7ER category on every AE despite it getting smaller.