Releasing your 'hack' as a patch is possible, but you still have the problem of people not being able to play your mod if it they are not on the same platform, as xander has pointed out. In addition, future official patches will
break your patch.
Having said that, if anybody does come up with a worthwhile 'hack', Ill help them create an inline patch to distribute it.
In fact, although I may regret this in the morning, I will give a copy of Defcon to the first person to modify the exe to include any of request in the unofficial requests thread
other than anything Ive already done. I think my copy of Defcon is pretty safe, but maybe not...