Not sure this correlation is meaningful or new.An emerging trend in the trading philosophies of some teams thus far in this trading period? A phenomenon that seems to revolve around what may be called 'strength-position-twinning'? We've had Neale and Dunkley and Gawn and Grundy as prime examples of this. The chief characteristic of the strategy appears to be that these teams are doubling up in areas of significant existing positional superiority. Nor does this seem to be sheerly a matter of simple succession planning (given the relatively minor age differentials of the 'twins' involved in comparison with that between an established player and a young recruit). In some ways, Collingwood seems to be adopting this strategy: Adams and Mitchell a prime example (and maybe, to a lesser extent McStay and Cameron?). The question is - other than providing useful injury cover - what is the primary purpose of doing this?
Melb replaced Jackson with the best available Ruckman
BNE took a gun midfielder.
In neither case was age relative to their existing "Guns" ( twinning) critical to their selection - just coincidental IMO.