Regarding Morrison, consider the following:
In his second season with Indy, he was a 2 and 3 down player with a 75% defensive snap count and he led the team in solo and total tackles. They traded him for Pipkins while he was on a contract paying peanuts. Why? Take a look at his Pro Day numbers:
http://www.draftscout.com/ratings/dsprofile.php?pyid=124464&draftyear=2016&genpos=ILB
While he doesn't look quite O-Lineman slow on the field as those numbers suggest, there is a point to be made. He's an old school thumper who does not run well making for a poor fit in today's game except in run sell-out base defense which is becoming increasing rare. While theoretically that kind of player is a better fit in a 3-4 than Indy's 4-3, it is very hard to hide that lack of speed especially coupled with Martinez who is not the speediest guy in the world. I can't say I'm all that impressed with his run game instincts either. There's a fair amount of faulty guesswork in hitting the wrong hole in his tape.
I think he is who Indy thought he was--just a guy.
The Packers surely were not unaware of his limitations and I'd find it hard to believe they viewed him as a developmental player in any meaningful sense. Recall that Burks dislocated his shoulder, McCarthy had already discounted Jones as a guy who could step back in at the position, saying "he'll compete at safety." When that trade was made the Packers were seriously short-handed at the position and needed a guy who could step in and play on short notice.
The packers were on track with Jones and Burks in terms of athletic profile if not fit, though Burks will get a chance to step up. The Packers do need draft a guy and I don't mean some 7th. round flyer.