Yes it is an interesting one.
I remember a young Steve McKee before his injuries.
Steve McKee was a very good around the ground ruckman - made position very well, took a few marks, but was very ordinary at centre bounces.
To my way of thinking, he did show early promise as a ruckrover type ruckman. This links well with their drafting of Kreuzer.
Football has taught us that you don't have to be a very good player to be a very good coach. To me, the emphasis should be:
1. The knowledge of what should be done on both a theoretical & practical sense, and
2. The ability to communicate & impart that knowledge to those you are teaching so that they can practise it.
Time will tell how well McKee fits & succeeds in the role.