I wasn't trading Trouba to make room for Nils. As I said after to Uninstaaled, I would be trading Trouba for other reasons. The resulting empty spot on RD has to be filled by someone. It can be Nils, it can be Hunter Skinner, it can be a cheap vet, whatever.
The hole created by Trouba's departure would be a downgrade. The question is, do the benefits of trading him outweigh that downgrade?
Benefits of my proposal (assuming, hypothetically, that he'd waive and Detroit accepts the deal):
- we acquire a desperately needed future top 6 center in Lambert, that we don't have to otherwise overpay for
- we shed $8m in salary, and that salary is used to extend K'Andre Miller, Kakko, Lafreniere, and perhaps retain depth like Vatrano and Motte
- it creates room for not-as-good-but-still-better-than-their-salary prospects such as Robertson and Jones (and ~cough~ Nils).
You take a short term hit on second pair D for the short term benefit of keeping your forward depth. You also solve long term center. You free up space to sign your kids. And Schneider is CLOSE to what Trouba is soon anyway, so within another season you don't really feel Trouba's departure.
All that is a trade I'd be willing to make.