Dear Fffreak9999, thank you very much for the comprehensive answer! You made a fair - if uncomfortable - point. Having studied 2 semesters of Probability Theory and Statistics I believe that I understand your point of view:
Even though they are announced, when picked up (with their nature), it is unlikely that every crate is picked up all the time not to mention for a single person to completely keep track of these events (you should have a more comprehensive view of this from the server logs). Nor do I know that the contents of the crates are determined at the time of their spawning, or could they "age" into something else, or morph due to some external impact (the end of your last sentence could imply that other types may be able to do that). Furthermore I do understand, that the Nuke Strike crate has been in existence since Tiberian Dawn, and "punishment" is necessary to preserve the Mystery aspect of the Mystery Crate.
My concerns would primarily be about the adverse effects that Mystery Crates with high Probability Weights regarding Nuclear Strike could have to the game play. It is in my opinion, that this particular crate could raise some ethical implications. In numerous situations, when someone happens upon one of them, there is a good chance, that other innocent bystanders will be also caught in the nuclear fire. I have seen examples of one happy player hurrying to pick up the crate - only to annihilate 3 others within its vicinity, whilst laying siege to the enemy base, hindering the offense.
All in all, I am just saying (meaning absolutely no offense to anyone), that the case of the Nuclear Strike crates could be worth some deliberation.