I can live with some growing pains. Leafs aren't fighting the get into the playoffs, they have some room to go before they're in that spot.
Dermott, in his 5th. NHL season, kind of shows sometimes the player just doesn't get it after 200 games. At 25 he is a bottom pairing defender. Better than Holl at 25, but Holl is probably a bottom pairing defender on a team that has a strong d-corps. Leafs are good defensively when the forwards pick up someone to cover, but the Rangers' game showed what happens when the forwards aren't engaged defensively.
Liljegren - 35 games
Sandin - 68 games
Who you going to pair them with, if not each other?
Rielly - Liljegren
Sandin - Brodi
Until Muzzin gets back I'd run it like that, those young guys are talented but asking them to take tough minutes with virtually no experience is asking to much of them
If things go well, stick with it but if the young guys start to struggle feed some Dermott into the rotation
They will make mistakes but they are the best we have available so accept it for what it is, warts and all