Interesting that you say "anyone with average vision" could see that Mrazek was "not a sustainably good good goaltender" and small and positionally questionable, yet you don't even know that Ben Bishop was Dallas' starter all season before getting injured and that he was acquired by them last May before he was set to become a UFA and signed a 6 year deal for about $5M per. My guess is that your pre-Philadelphia knowledge of Mrazek was about as extensive as your knowledge of Ben Bishop.
Anyway, the point stands that the general consensus on this board was pro-Mrazek for as far back as this summer, before they signed Elliott, and it was another case of me being contrarian for the sake of being contrarian when I said I was against him because he gave up more bad goals and was out of position more than just about any NHL goaltender I had ever seen. Now, when Elliott and Neuvirth both went down Hextall didn't have much of a choice -- he had to get a goalie, and Mrazek was probably the cheapest price out there -- but as it turns out they wouldn't have been any worse off (and maybe better off) simply going with Lyon.