Strome should not come back for the sole reason that he's probably one of the only spots we can upgrade on anymore. Half of this forward group is locked in unless something shocking happens. Kreider isn't going anywhere. Zib isn't going anywhere, Panarin isn't going anywhere, Goodrow probably isn't going anywhere, Blais was the key piece in the Buch trade and he's probably sticking around for a while, Reaves was likely guaranteed a permanent spot while he was here to facilitate that trade, Kakko and Laf aren't going anywhere. That leaves 4 spots that are occupied by Hunt/Rooney/Chytil/Strome (not counting Gaut for this purpose since he's only playing cause Blais is out).
Yeah I get that we don't have a better center than him waiting in the wings or anything but if they think this top 9 is missing a certain style of play Strome is one of the only impactful positions left that can be upgraded. I think signing him again would be a really bad idea but it's not because he's played poorly or is bad (quite the contrary, he's been one of our best players this year).