[quote=urukhai]
Interesting point, glad you brought it up. For the most part it would be adaptability, MEC troops make excellent heavies, but are massive targets and cant climb very easily. Biotic troops are agile and have various new abilities that help them out on the feild, but they wind up taking on a more specific, support role. Also both the MEC and the Biotic soldiers are automatically disqualified from being PSI troops (which are just normal troops with mind powers). But in the end if a person is a human soldier and finds they want to change they can be augmented, though there is no going back.
[/quote]

Thank you for the excellent definitions (I have only played a few hours of EW, and haven't made all kinds of troops yet), but I'm afraid that you didn't quite answer my question. To be frank, my fear is that amongst these various kinds of supersoldiers the normal human will stand pretty much useless. From my point of view any task on the battlefield that can be performed by a normal human can be done as well or better by one of the other lads. What I'm looking for is a real reason to choose a normal human, something that is unique to them beyond the ability to go out for drinks and not cause a bloodbath.