In reply to Denni: Everything really.
I have an active jacket that is away for repair, but I'm thinking of a second jacket or alternative replacement. The active is great for fast and light scrambling days, and I've climbed diffs in it and big boots. It's been totally storm-proof as well.
I was just thinking that something a bit tougher might suit a bit of winter climbing, summer guiding (ML), multi-day backpacking etc. Maybe save the active shell for solo days.
I accept that there's a weight v wear compromise though, hence my joy at spotting a pro shell that weighed 380g!
Just curious, and browsing for Xmas ideas ;P