Bringing Maroon back would feel like settling at a time when we should be pushing to be better. Maybe he finds another gear and becomes the player we all hoped he would be in the playoffs. Still, what we have seen from him even in his positive stretches is all of the things you described, but I feel like even an average 3rd liner does those things and more.
He's become good on board battles, he's become good at cycling the puck and he adds some toughness. I just feel like you can find plenty of guys for $2M (give or take) that can do those things and actually have average to above average speed and can put up 30-40 points.
I think that is a pretty unrealistic expectation. I do this type of post a lot, but I think it is worth repeatedly emphasizing what exactly is a reasonable expectation for offensive production.
There are currently 224 forwards with 27 points or more. With just a week left in the season, that makes it incredibly unlikely that we see 225 30 point forwards in a year where scoring is up. There are 151 forwards with 37 or more points, making it pretty unlikely that we see 150 40 point forwards this year. With 31 NHL teams, that means that there are essentially 279 'top 9' forward spots in the NHL. 30-40 point production puts a guy into low end 2nd line or top end 3rd line production. Combine that with 100+ hits, a decent 2 way game and the ability to control possession down low and you suddenly don't have a whole lot of guys available in UFA.
Riley Nash got 41 points last year at least partially because he got the dream-role of filling in for Bergeron on Boston's top line for a decent stretch. He got a 3 year, $2.75 mil AAV contract with Columbus and has managed a whopping 11 points this year.
Grabner's 36 points netted him a 3 year, $3.35 mil AAV deal last summer (with a modified NTC).
Derek Ryan's 38 point year got him a 3 year, $3.125 mil deal from Calgary. At the time he signed that, he was a 31 year old with 153 career NHL games and just the one 30+ point season on his resume since he didn't break into the league full time until he was 30.
Komarov came off a 19 point year after 3 years of being a 25-35 point guy and was given a 4 year, $3 mil AAV contract (with a modified NTC).
Vanek got a 1 year, $3 mil deal with a full NTC.
Filppula's 33 points got a 1 year, $2.75 mil deal with a full NMC.
Riley Sheahan is the closest thing to what you describe who got around $2 mil. He got a 1 year, $2.1 mil deal last summer after posting 32 points. However, he has been a possession nightmare most his career and isn't nearly as physical as Maroon. In other words, at $2 mil, you might get the low end of that 30-40 point production, but you aren't getting it from a guy who can also do all the tings Maroon does well.
I'm not married to Maroon. I'll be fine if the Blues move on from him, but people need to temper their expectations about his replacement. If we're talking about spending less than $2.5 mil on his replacement in UFA, we are almost certainly not upgrading the roster spot. Spending less than $3 mil on UFA forwards buys you a pretty damn flawed player. Again, I'm not saying that we have to re-sign Maroon, but that reality needs to be taken into consideration when you make that decision. Unless there is a clear plan to upgrade, I think it makes sense to test the waters on another discount contract for Maroon. For all of his flaws, Maroon has absolutely been worth his contract this year.