It doesnt matter whos the #7. It also doesnt matter if theyre not part of the future, Matheson isnt part of the future either. Leap in logic.
Theres 30 games left to the season and everyone healthy, no reason to believe well have 40-60 games of injuries to cover.
Next year they can sign a cheap vet UFA like Demelo or spend the money on an actual good vet like Pesce, Walker or Roy.
By playing a lot the D core will just be further along at the same time. Xhekaj and Struble need to see reps on the PK if theyre going to be NHL regular, better early than late.
Gostisbehere was coming off a very bad stretch of ~100 games when he got traded and hes a smurf. Matheson for all his faults, is still 6'2 and skates like the wind and has had the best production of his career.
Matter of fact, Gostisbehere is exactly a counter example of why keeping Matheson is a bad idea. When he regresses, hes not gonna be worth a dime. For all the hate I have in my heart for Matheson, hes still a NHL regular, something Gustaffson is not.