I found transitioning to full project billing extremely satisfying. The main downside is not clear project requirements, scope creep and you said / I said issu

I found transitioning to full project billing extremely satisfying. The main downside is not clear project requirements, scope creep and you said / I said issues. One way I found very helpful in mitigating it is getting a prototype of the UI, with some comments about what's unseen. Getting an "idea to prototype" thing done is not expensive in context of any 25k+ projects and gains are huge on both sides.