I see shades of Charlie Coyle from Sennecke.
He's big, strong on the puck, generally moves well, has some nice mitts, takes good decisions on the ice, is a pretty good shooter, great when it comes to puck possession, and just positions himself/reads plays well.
Then you look at his level of play from October to now, the quite frankly amazing learning curve since about January on combined with his physical gifts and skating, and it appears quite clearly that Sennecke has the potential to be a very good player in the NHL.
And one that is quite "safe" to boot given how much detail there is to his game, and how translatable his skillset/plays on the ice are.
The one real caveat that I have with Sennecke is a question about just how high-end his vision and decision-making are offensively. And also whether or not he has it in him to be a strong play-driving winger or if he ultimately ends up being more of a facilitator and complementary piece for higher-skilled players at the NHL level.
Oh, and I also think Sennecke could stand to get more agile on his skates and improve his edges too, as I found that he sometimes looked a bit lumbering while trying to weave his way through checking in the games that I did see.
So yeah, personally I don't quite see Sennecke in the top 10 but I still really like the player so if a team jumped the gun a bit for him then I would understand.
But I rate Tij Iginla slightly higher because from the viewings I've had his hockey sense seemed better to me, though he admittedly does not have the strength/reach advantage that Sennecke does, nor are his hands as good.