I think people are over estimating Talia's value, he'd be seen as steak knives. Just not enough runs on the board. Same goes for players like Hrovat.
We would be dealing with Adrian Dodoro. He lost Ryder last year for P17 & 37, after Ryder threatened court action to get where he wants. Carlisle is younger and IMO better. It would take our 1st rd pick plus a player and/or our 2nd rd pick. Hrovat has played well against Essendon before, so they might be interested in him.
I don't see how we can get WHE as well as Carlisle, unless we somehow can bluff our way for him to fall to us in the PSD - seems unlikely. SOS at Carlton may have something to say with WHE as well.
GWS and Essendon are probably the two hardest clubs to deal with for us going on recent history.
Josh Walker would have to worth around a 2nd or 3rd rd pick (that they only got P21 or so for Christensen and paid that for Stanley is a benchmark I guess).
We have to improve our spine, I'm not against trading out a dwarf or two in order to get it done.