I think Robertson will be relatively cheap (similar price to Colyer - future fourth round) being out of contract.Your suggestion of a mid to late 2nd would probably be fair. Richmond are under some CAP pressure as can be evidenced by Ellis waying up his options as a RFA. Doubt we'd be in a position to take on Blakely's salary, more likely take picks to the draft. Are a bit light for inside mids though. By the way I think the suggestion of Roberton from the Lions would be a good get.
With regards to McIntosh I’d suggest if Blakely was to leave he would be a good replacement. I feel they are similar trade value. You say mid 2nd and we will say early third and middle ground is about right late 2nd - which is same range as Blakely (if in fact the rumours of a trade for him are remotely true). I feel this is a tipping point and we need to trade him for a another top 22 player. Wing is a need for us. A draft pick is preferred by Richmond. Otherwise Blake Acres at St Kilda would be another reasonable swap. Again St Kilda May prefer the draft pick with them already having many fingers in other pies.