With Parker on board we have Rooney, Goodwillie, Shankland, and Josh which is enough. Not too keen on too much squad rotation and it's hard to keep 4 players happy, never mind more.
If we get an injury or two I'd like to see Shankland given a chance, a good few games starting to break his duck and hopefully go from there. Black and Hewitt started in their teens, as did Booth and Jess, seems like the right thing to do and take the next step with Shankland IMHO.