Certainly some food for thought re Martin. I am currently swaying towards leaving Martin out and picking a cheaper rookie. I guess we need to weigh up where that extra cash will be spent - i.e. perhaps it can allow you to grab that extra premium. If the extra cash can't be used to facilitate this would we just be better off getting Martin due to his scoring and JS potential?
In simple terms, if you have confidence your M7 will play most weeks, and getting a cheaper Rookie instead of Martin will allow you to upgrade a selection elsewhere to a player you think will be a Keeper/Premium, I think you'd be crazy not to do it. What you lose in Martins JS, and potential score, is more than made up by saving a trade. Don't forget, you don't just compare Martin's score to the Rookie who replaced him, you also have to factor in the amount your new Keeper/Premium outscored the player he replaced.