Here's the thing though, if you look at his stats throughout his life, 20 goals would be considered a fluke.
I think the circumstances in Vegas are so different compared to previous years that i find his past stats irrelevant at this point. Playing 13-14 minutes in the bottom 6 without any PP time makes scoring 20 goals a tough task for anyone. Big difference to being the 1C, playing on the top PP unit and having skilled players to play with.
Personally looking into last year and making projections based on that is going to be much more accurate. He had the best shooting pct in the NHL for any top 6 player. 23.4 shooting pct is out of this world and will come down even if he chooses his shots carefully. But at the same time, he met the eye test for me in terms of being legitimately a very good player, and he's going to have the same surroundings to produce.
I think natural regression with the SH%, pressure that comes with expectations and Vegas having a target on their back will lead to his numbers coming down, but despite that i would say i saw enough that 30 goals is definitely possible for Karlsson.
Probably settles between 25-35 so this poll is a 50/50 for me.