I also think he is a better back than forward right now at least, although his Brisbane game where he allowed Hipwood too often a free run at the ball suggests he has some basic work to do there as well. I was all for experimenting with him forward mainly because in 2021 our key forwards were pretty average. Lynch seemed permanently placed deep forward and Jack is better inside 50 also these days. We had no CHF.Was tried as a forward for the first part of the year, and ended up down back as the experiment did not pan out as hoped.
Along comes Lynch with a perhaps a career best season and suddenly the problem was largely solved. So there was no real need for an extra tall. Then Miller comes on and looked likely as a senior footballer and more so he rests forward occasionally. He still had Balta's problem of having to get out of Lynch and Jack's way, but next season will see Jack pass the baton on to Miller (hopefully). So yes the experiment might be over for now.