The ideal partner for someone like Nurse would actually be...someone like Christopher Tanev. A guy who can sit there like..."i have absolutely no idea what my partner is doing right now or why, but i'm going to adjust myself to compensate and hedge against the impending calamity". And like Tanev, can process all that in a split second...because Nurse is capable of making instantly bad decisions.
He made Ben Hutton look competent for a minute. Hutton plays a lot like Nurse. Skates well skilled, does a lot of dynamic things. Also...sometimes...no clue what their brain misfunction is.
Tanev is good at covering for that.
Seider is dynamic and at times even overly aggressively himself. That's one of those "fuel + match" recipes that is hugely nope.
Honestly Tanev is someone that I don't think would fit well with Nurse. It's For the same reason it didn't work with Nurse next to Larsson: Even if he has the talent, Nurse can't be the main offensive catalyst on a pairing.
What Nurse can do an outstanding job at is covering for a defenceman who's good in transition, but a train wreck defensively. For example, Nurse managed to make Barrie, a guy who was more or less tied onto a rail car and ran out of town in Toronto, into a successful top pairing option during the Covid year. He also did similar work making Bear look like a legitimate top 4 option before Covid hit.
But both of those guys were good at puck retrievals and headmaning the puck themselves. It why even in these playoffs, where he was an endless negative playing with Ceci or Vinny, he was suddenly a +5 in 7 games vs. the best of the West and East playing with Kulak and Broberg on their offside.
Hell, his best hockey in the regular season came while playing with Stecher.
It's unintuitive af, but you'd get way more mileage out of pairing Nurse with a guy like Sean Walker or even Gostisbehere, than you would having Nurse together with Tanev,