Block migrations suggested by users with a poor track record (AKA, “inverse migration 'flag' weight”)

Question

Since Require minimum reputation on the target site for migration is rejected, I've been trying to think up ways to reduce bad migrations without severely impacting the ease of migration. Ideally good questions should be migrated quickly and bad questions not at all, so we're kind of optimizing for two things at once.

In any case, my suggestion is that every time a migrated question is closed¹ (or otherwise rejected?) on the migrated-to site, everyone who voted to migrate it there gets a strike against them. 3 or 5 strikes² (or something) and you lose the ability to suggest migration when voting to close.³

That would help to reduce the number of clueless close voters who don't understand "Don't Migrate Crap" (or don't understand the target site's scope) while keeping good close voters doing what they do.

_{¹Probably for any reason other than as a duplicate.
²This would need to be limited to a certain period of time. 3 bad migrations over 2 years probably shouldn't be punished; 3 in a week, on the other hand, definitely should be.
³At least to that target site, anyways.}

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This suggestion was triggered by this discussion. Programmers seems be suffering with bad migrations from regular SO users; I don't think the current measures are enough. With the number of close voters required to migrate a question (generally?) being so low, I'm not convinced that a majority of them selecting one site is enough. I believe the issue of herd behavior has been brought up here on Meta before, where everyone selects the same destination because someone else suggested it and the name of the destination vaguely matches the question.

Answer 1

I ran the numbers on this, just to see if it would do... Anything. Here are the people who'd be blocked from migrating from Stack Overflow if we didn't put a time window on it:

User                 # rejections
---------------------------------
Bill the Lizard             22 
casperOne                   21 
Graviton                    20 
Will                        17 
Quentin                     12 
Robert Harvey               12 
Tim Post                    10 
Jonathan Sampson            9  
Jeff Atwood                 9  
Don Roby                    9  
Paul R                      8  
skaffman                    8  
Michael Petrotta            8  
Mitch Wheat                 7  
Mat                         7  
Perception                  6  
marc_s                      6  
Kev                         6  
Brad Larson                 6  
Brandon                     6  
Oli Charlesworth            6  
BalusC                      5  
BoltClock                   5  
David Thomas                5  
Jay Riggs                   5  
bernie                      5  
Eugene Mayevski 'EldoS Corp 5  
Greg Hewgill                5  
Michael Myers               5  
JoseK                       5  
Andrew Marshall             5  
Tim Cooper                  5  
Jerry Coffin                4  
Pekka                       4  
Cody Gray                   4  
Mysticial                   4  
ildjarn                     4  
Tomasz Nurkiewicz           4  
Corbin                      4  
Chris                       4  
amit                        4  
SilentGhost                 4  
Shog9                       4  
Oded                        4  
Lasse V. Karlsen            4  
Bob Kaufman                 4  
Jim Garrison                4  
Ignacio Vazquez-Abrams      4  
gnovice                     4  
mauris                      4  
Matt Ball                   4  
Dustin Laine                3  
Pablo Santa Cruz            3  
Ken White                   3  
John Saunders               3  
M4N                         3  
Josh Lee                    3  
SLaks                       3  
abatishchev                 3  
R. Martinho Fernandes       3  
tvanfosson                  3  
Shoban                      3  
CharlesB                    3  
Mark Ransom                 3  
bzlm                        3  
paxdiablo                   3  
Thilo                       3  
Juhana                      3  
bluefeet                    3  
Bart                        3  
vcsjones                    3  
RepWhoringPeeHaa            3  
mu is too short             3  
Pascal MARTIN               3  
Ernest Friedman-Hill        3  
thinksteep                  3  
tereško                     3  
Ash Burlaczenko             3  
Filburt                     3  
Andrew Barber               3  

Ok, that's everyone who's voted for a migration that's later been rejected, by any site, in the past two months or so. It's... pretty mod-heavy. Obviously, we do need some sort of a window. A week didn't catch anyone though, so what about a month?

User                 # rejections
---------------------------------
casperOne                 8 
Jonathan Sampson          4 

Heh.

I think it's pretty safe to say that, at this point in time at least, implementing this feature wouldn't accomplish anything useful.