There was only one occasion where Blind's lack of pace and power was exposed and that was when Gomis hit the post, and in the very same move Smalling was left on his arse by Gomis which shows that even if you have the pace to stop him he can be very difficult to deal with. Surely if it was something that is so easily exploited then they would've just targeted him the whole game and ultimately created chances from it? In reality they exposed our defensive disorganisation and poor tracking of runners on both occasions. Blind is better at that than Jones and a lot better than Rojo, so I can only see them leaving us more exposed not less so.
I just think people overstate the importance of individual physical attributes when more often than not it's defensive disorganisation - through poor positioning, communication or just overall reading of the game - that leads to chances being created, and Blind is very good at that side of things. He has his weaknesses no doubt but I'm just saying that those weaknesses are less important than Rojo's weaknesses, for example, but it's far easier to point to physical traits than mental traits and this whole "pace and power" image that the PL is famed for is so prevalent that people worry far more about the former.
There's also that thing about it being his 3rd position. I don't agree at all. In a possession-based team he's much better in defence than in midfield and I'm not convinced he's any better at left back than he is at centre back. People refused to accept Blind could ever be a good left back in the PL for the exact same reasons they're saying he can't be a good centre back which is what I find really odd. They eventually accepted he is in fact a good left back - proving his lack of pace wasn't that easy to take advantage of despite it unquestionably being more exposed on the wing - and the strengths he showed out there - his organisational qualities, positioning and overall reading of the game - are utilised far more often in the centre, but that gets ignored completely while people regurgitate the same argument all over again.