I like that critical hits add an element of chance to the game, when I roll a bunch of dice, I set aside my crits, and they mean special math, sometimes great, sometimes not as great. Assuming everything is balanced (when it gets there) crits are what make the dice matter. Its a very small chance of getting those big numbers on the crit table, but that said, I wouldn't mind some kind of crew check before a crit is applied or something, some kind of save to make their impact on larger ships less of a downside to using them.
Whenever I take a Tara'lin, I often wish I'd have just taken four White Stars. I'd love for that not to be the case, but thats more of a Tara'lin issue, and a "crits can ruin your day" issue, than just a crit issue.