Domi for Ehlers works. Habs might have to add.
Jets get their center. Habs get true a LW instead of Domi at LW.
It doesn’t fill a need for the Habs (LD or RW sniper), but it’s a tweak that makes them better. Gives them more consistency.
Ehlers - Suzuki - drouin
Tatar - KK - Gallagher
Lehks - PD - Armia
they could use picks and prospects to fill needs. Maybe go after Dunn and Pulju.
Ehlers, at 24, already amounts to career best Tatar on a consistent basis -- AND with remaining upside. However, your line of Ehlers - Suzuki - Drouin doesn't stack up at all, IMO -- much too soft! Ehlers is more suited to play on the off wing (RW) because he's a better goal scorer/sniper than Drouin who, for his part, is more of a playmaker.
Adding Ehlers makes Tatar expendable, replacing him with a much younger equivalent, IMO. However, that amounts to trading Domi (also much younger than Tatar) in order to be comfortable shopping Tatar around. How much we can get for Tatar will dictate just how good a move this is, especially if we need to add to dome to get Ehlers, something I'm not necessarily convinced about.
What would that add-on look like? A 2nd round pick? A later pick? A B prospect on D?
I honestly believe we need to get bigger and stay skilled on the RW.
For now, I'd go with the experiment we saw at the end of the PHI series with Drouin - Suzuki - Armia to see if they can develop any sort of consistency. I like the mix of defensive awareness between Suzuki and Armia, the offensive upside of a Drouin-Suzuki tandem and the size Armia brings to create more room for the other two.
That would leave Ehlers as a better sniper than Drouin with Kotkaniemi and, in the interim (before Caufield graduates with the NHL club) Gallagher.
Ideally, that 3rd line would resemble what you described as Lehkonen - Danault - Armia but, clearly, we need a replacement with size and skill for the top-6.
Ehlers - Kotkaniemi - Gallagher
Drouin - Suzuki - Armia
Lehkonen - Danault - Byron
Poehling - Evans - Ylonen
We aren't out of the basin filled with diminutive players for the top-6 if the lineup ends up looking like:
Ehlers - Kotkaniemi - Caufield
Drouin - Suzuki - Gallagher
Lehkonen - Danault - Armia
Poehling - Evans - Ylonen/Byron
I hate to say it but, Gallagher should perhaps be considered as a moveable asset that ought to be replaced with skilled beef to balance out the top-6 -- or he should be eventually shifted down to the third line, along with Danault.
Montreal needs to add size on LW and RW:
Ehlers - Kotkaniemi - Size & Skill RW
Size and skill LW - Suzuki - Caufield
Drouin - Danault - Gallagher
Lehkonen - Poehling - Armia
Evans, Ylonen
Can that RW be an UFA? Can that LW be Samuel Poulin in a trade with Pittsburgh involving Poehling ++ once Domi has already been traded for Ehlers?
Ehlers - Kotkaniemi - UFA RW
Poulin - Suzuki - Caufield
Drouin - Danault - Gallagher
Lehkonen - Evans - Armia/Ylonen