Google's new Nano Banana 2 Lite is really fast, as in about four seconds from prompt to image. That speed changes how you think about writing the prompts as much as the schedule of producing them.
The standard Nano Banana 2 model, and most other AI image generators for that matter, take long enough that it's worth spending some time working out the perfect prompt. It can be annoying to have to redo it multiple times when you have to wait up to a minute and still might get it wrong. You learn to be cautious in your prompting.