He's becoming a versatile two-way player, who can play in bottom-lines and produce, and is at least a decent player to play in top-lines in cases of emergency.
I really don't see him being a top-6-player in a contending team, but a valuable third-liner absolutely. When the team gets better, he's not getting as much ice-time and especially not as much PP time, which will hurt his production.
I think him, Grigo, Schaller and Varone all are going to have/sign one-year QO for next season. Larsson as well Grigo are going to be trade-baits in order to get a young core-piece.
I even think, that if Larsson is offered a two-year bridge-deal, he is going to be used as a trade-bait. He has shown enough to be considered as an NHLer, and some contending teams with cap problems might see him as an excellent piece to have in your third-line for two-years with salary about 800k.
Really happy to see him establishing himself.