Honestly, does it even matter who they got? Look what we're talking about here.
They're one of the most cap-crunched teams in the NFL right now, and they can't even win a division where 8-8 (forget the tie garbage, Green Bay was an 8-8 quality team) is "good enough". Yes a lot of that does fall on the previous regime, which let's be honest here Marty Mornhinweg would probably coach circles around, but still. This team, as a whole, is not very good at all.
I mean, look at 'em. Just really look at the situation, outside of the big names and fantasy stats. The QB is a prima-donna frat boy who refuses to tailor the flaws of his game (those flaws highly enabled by said previous regime, but I digress), the WR's are a nightmare outside of one multi-generational talent that seems to have, in the most fitting instance of Lion luck ever, developed chronic knee pain, and the offense as a whole grinds to a halt whenever he's not in the lineup. And I haven't even gotten to the defense yet, what with that dumpster fire of a secondary that they STILL haven't fixed. Is there literally anyone in existence that even could make this work?
...with that being said, a new coach, really anyone at this point not named Jim Schwartz, can't hurt in the least. I can't and don't expect much out of this roster (the talent level of this team is highly overblown to say the least; they're better than 7-9 for sure, and with a better coach who isn't a lunatic they win that division, but they're not some darkhorse Super Bowl threat either, not with that secondary), but can Caldwell really be any worse than his predecessor? I mean seriously, I don't think they could possibly do worse at this point; he was as toxic as toxic gets.
One last point; it's awfully funny to me that everyone's so jilted over Whisenhunt, when, in reality, we're talking about a guy who lost 10 out of his last 11 games the last time he ran a team. Granted Caldwell didn't do much better, but still; that's awfully Schwartz-esque. Why are upset about not getting this guy again?