re: re:Old things
An IVA suit and an EVA suit only makes sense. Sure they will take up room, but will make it possible to both have your cake and eat it to.
An airlock would have also been nice, but I imagine that is to late of an addition to contemplate now...
maybe an inflatable one is still possible (shades of Vostok 2!)?
A D-Suit (David Clark's submission) would be going back to an A7LB type suit. Not a good option. You sacrifice mobility for comfort. It would make more sense to just have two suits.