Well, then I won't bother to texture the armors, but anyway, i haven't seen the new dude model, nor have seen if the little skirt was part of it. If its not, the model won't look good.
According to wikipedia : The average height of the moai is about 4 m (13 ft 1 in) high, with the average width at the base around 1.6 m (5 ft 3 in)across. These massive creations usually weigh in at around 12.5 tonnes (13.8 tons) a piece.How much polys do you expect ?
Source : http://www.durolitum.co.uk/gladtypes.html# According to this some of those guys won't be made because not historically accurate. Anyway, I will do anything (armor weapons, props...) for them. Tell me what you think I hope you will like it
I'm not really confident with that importing part. I'll try when i have time but i don't really know how to do it, also my collada plugin is a bit older compaired to the game, may have to switch to blender to get them in the game.
Maybe you could make an other type of obstruction. One that prevents user from building but not units from walking. This way you would also get a starting point for units on walls.