A DS9 Bajoran. No, a Bajoran doesn't fool you into thinking he's actually an alien, but at least he doesn't look like a bad Halloween costume.
I'd take a well-done-but-recognizably-person-in-make alien over an obviously-a-guy-in-a-rubber-costume-out-of-a-cheap-B-movie alien any day of the week.
I'd agree with you, but I see what they mean. It looks more alien, but looking more alien is no good if it looks like shit.
I don't disagree, but I think there has to be some middle ground. I wouldn't want a man in a suit every week, but by the same token shows can get lazy (yes I'm looking at you Star Trek) especially when you have to have a monster/alien every week. I think while sometimes the man in the suit can look rubbish, at other times it can work really well, and I;'d rather they at least tried to do something that looekd alien and didn't quite always pull it off than become lazy and just slap putty into different parts of people's faces. This is a similar issue to the future clothing one. Now it's really easy to muck up totally trying to create future fashions, but again at least it shows some level of imagination that you try sometimes. This is science fiction not Corrie!
We've had a few "Man in a suit" style monsters and aliens though, the Cybermen for one. Those aliens in The Doctor's Daughter (if they count), the space flies from The Planet of the Dead...