My initial gut reaction was we now have 5 top 4 D (Reilly, Brodie, Lilly, Gio and Muzzin), but I think I'm remembering Muzzin of last year. There's a chance he regains his form, and he can step it up in the playoffs ... but I'm not optomistic.
Rielly: #1 D - not perennial Norris trophy, but not worried if he's my best D on the team
Brodie: #2/3 - not worried who he's out against during the game. amazing partner for somebody like Reilly, but couldn't be the best guy on a top pairing
Gio: Solid #4 right now I think
Lilly: Seems like he easily slides into a #4 spot right now with his recent play. Sure he's young but overall he's a #4 and possibly a #2 by the end of next year. Could be better than Reilly in 2 years if we're lucky.
Muzzin: #5 now after injuries and he's looked terrible at times the past year when paired with Holl, I wouldn't be too worried if he was our 4th if he had a good partner.
Holl: #6 - seems like he hasn't been as good. If we had an injury, had a trade or didn't acquire Gio, I wouldn't be worried that he was our 6th D. But he seems like the odd man out if Muzzin is 100%.
Bush: #6 - style of D we need on the team
Sandin: #6 due to injuries this year, haven't got to see him enough. Expected he'd be higher than this after last year.
Note: just because I have Holl as a 6 and Muzzin as a 5 doesn't mean I want them playing together!
All that being said, we do lack a true dominant #1D unfortunately. Rielly is a solid #1D but not an elite one.
A true dominant #1D, yeah we don't have a Matthews equivalent in Rielly, probably more comparable to Marner's ranking in the forwards. There's probably 10 D I'd like more than Rielly and another 5 that are close to him. His value is probably a bit higher considering the 8 year deal he just did for us too.