Atm I have one of my own academy players from end of last season as DMC - once I get another DMC I'll try him at DC. He rated 7 every game as DMC so far.
I only take my own Academy players when I'm low on cash - I like to look for other teams Token Academy players on TM. My longest serving player is another team's Academy player iirc and he's picture as Steve Nicolup there.
I'll get another tomorrow and I might take him since I've got expensive Stadium upgrades. I'll update here if I do.
Academy players are a high T low Cash option - for me its more about having a player that will not need replacing for a while. Low T High Cash option for a fast trainer is still NordGems or others' Academy. Academy is not the answer to everything - its still high cost.