Quoted from o-din:
Well, if it was up to me, I'd just include that post in the goody bag or whatever and let those that want to use it drill away. And those that don't won't have an empty hole to look at after removing it.
Actually that's what they did with T2, it was originally supplied with both a post and a white plug, so the operators could then choose how they wanted their machines setup.
Anyway back to Alien