Stramel has looked fine from my sporadic watching, but very limited minutes. He doesn't look bad at all compared to how negative everyone seems to be about him. Skating looks good, two nice attempted passes cross the hash marks, executes bounce passes, finishes his checks, positionally sound. He doesn't make fancy plays, isn't perfect with his execution, and he isn't physically dominant against the older players.
I don't know, maybe I am looking at things through rosy glasses, but he's a power forward archetype that is in the development stage, this is how many of them look until they get the man strength and practice time to actually control the puck. If he were a high level producer at this stage, he would have been a top 10 pick or higher.
Obviously you would like more play time, responsibility and production, to help build confidence, but that's not necessarily what will make him an effective NHL player, practice and weight room are where he is going to make most of his advancements.