To be fair no back was introduced at any stage in Championship, ,Murphy, Conor Sul ,Burke, Lorcan etc etc , didn’t need to until A1 semi and we all know what happened there .Burke couldn't make it last season and won't make it in 2018.
It may be Joyce dropping back or O Donoghue or Browne in the corner.
You may have rated McDonnell in 2017, I didn't.