Most climbs in Zwift take no more time to reach than I’d want to warmup. Obvious counter-examples are the radio tower and, to a lesser degree, Box Hill and Leith Hill. But I sort of like this – that you need to ride a bit to get to something. It would be cool to have a climb up the backside of L’Alpe that was more remote. But otherwise I can reach everything within 10 minutes, I think.
On FullGaz, you typically start literally at the base of the climb, and that’s a bit of a rude start to the ride (you can warm up before hitting “start”, of course). I like how in Zwift you get to spin a bit to reach the base. Same with RGT Stelvio. I prefer Zwift’s approach.