Ask HN: What is your biggest bottleneck when developing with agents

I've been developing with agents daily, more than 8 hours a day, and I've been thinking about the bottlenecks around for end-to-end development using them. I've find testing is one (as my previous Ask HN pointed out) but I am also wondering if agents would be more useful if they had access to the same infrastructure, software and environments we do as human developers. Would love to hear what everyone is experiencing!