This is a risky move for both Sinfield and Hetherington.
There's a precedent out there that ex-players close to retirement don't make good coaches. I hope Sinfield can show us a different outcome.
If this is a move to gradually replace GH with Sinfield then I'm happy with that. The on-field side of things I'm more concerned about. I suppose the rationale with Lowes is that a coach of greater stature (Furner, Kearney etc) would not accept a similar position of being subordinate to Sinfield. Lowes could also be easy to replace if things don't work out in the short-term.
The immediate objective is to secure a place in the top 8. Hopefully the euphoria of Sinfield returning will be enough to bring about that change.
In the longer-term, I have no idea what this means for the brand of rugby Leeds will play. Again, the hope is that Sinfield will deliver the brand of attacking rugby most of us want to see, but many of the notable wins he presided over as captain were dour grinding performances. For a long time he had to live with the consequences of not 'taking the two', and however much the current team could benefit from a safety first approach, I hope this is not what we see next season and beyond.