Firstly congratulations!!

I'm also pregnant at the moment living in Bern and agree that although H&M has some good stuff, it's quite limiting. I've also found baby 'stuff' quite limiting, so have done some research.

Stuff
www.babyjoe.ch (Are cheaper stockists of the bigger items like prams and car seats)
www.deltakids.ch are like above... (cheaper for the bigger items)
www.babywelt.ch is near Bern... not sure if there is one near you, but they are probably the best stockist of furniture, stuff and clothes here
www.mamasandpapas.co.uk (We have had our furniture shipped from M&P's at an alarmingly reasonable rate)
Of course Ikea do a limited range of furniture and stuff

Clothes
www.jojomamanbebe.co.uk (They ship to Switzerland and have nice clothes)
www.mothercare.co.uk do actually ship some things here and basics are vastly cheaper in the UK, so it's worth paying the postage
Belly Button is a nice range of slightly more expensive maternity clothes available in Switzerland. It's stocked in quite a few shops here and I'm sure you'd find it in Zurich

Hope that helps for now. If you're on Facebook, then my husband and I set up a group called 'English speaking mums in Switzerland' which has had a huge response and has loads of tips. Hope I won't get in trouble for posting this here, but it's all about networking at the end of the day

Good Luck with your wife's pregnancy and you imminent little one!!