There are still significant limitations, no amount of prompting will get current models to approach abstraction and architecture the way a person does. But I'm finding that these Gemini models are finally able to replace searches and stackoverflow for a lot of my day-to-day programming.
What do you mean specifically? I found the "let's write a spec, let's make a plan, implement this step by step with testing" results in basically the same approach to design/architecture that I would take.