... or something like this infamous card, which was finally given a use (beyond psychological warfare) in the last set. 
Haha. I don't even play the game, but that's hilarious!
How long was it from printing 'til it was actually useful?
The game was released in 1994, that card i belive is 1995. The last set was was 2000-2001 ish and closed out a lot of unfinished card references. Then 2nd Edition came out.
The last 1st Edition National Championships (1999?) I went to I had spent alot of time putting together what I thought was a good deck. I normally went OK at Trek, finishing 1st to 3rd most tournies in a field of 15-20 players. My opponent, who won the tournament, has designed a deck to win on the first turn. He won the toss, and i never played a card. It was very silly the game had got to that point, but still impressive that he had worked out the deck. Needless to say, Decipher realised it was time to fix the game, printed a final set to close all unfinished cards, and released 2nd Edition. I guess my point is, the fix (
http://www.trekcc.org/1e/index.php?id=127&cardID=1382) was only printed because the game had come to an end in its current format. The wait may have been even longer otherwise.
Mot the Barber (linked to that original card) was not released until set 14 of ST2E (2007?) and became one of the most powerful cards in the current meta. About a month ago, the Star Trek Continuing Committee placed errata on this card to reduce its effectiveness. To solve the problem further, the latest set which came out last week, released a new card that ripped the Mot deck to pieces. Just in time for all the Regional, National and World championships. Most players seem happy about it, except the players that only play the Mot deck I guess.