Wasps have always prospered from having quality back rowers who aren't starters or stars.
It may be Morris at the moment.
A few seasons ago it was Guy Thompson
Back in the day John Hart
There will have been plenty of others in between that I can't think of.
Every time they play, it's hard to understand why they're not regular starters.....
And then we see Jack Willis, or George Smith, or Dallaglio and realise that back row is just a really competitive position(s), and absolutely crucial to the game.
So we need players like him as much as we need our stars