Okay, but let's say you want to test a few looks. You tipically change back and forth and make small changes, so a few seconds for the redeploy, and mabe a few

Okay, but let's say you want to test a few looks. You tipically change back and forth and make small changes, so a few seconds for the redeploy, and mabe a few clicks here and there to get to where you want to be. That might take 10s each time. So testing if what looks nicer is is a matter of instant change and 10s per change and extra clicking all the time. I personally don't like repeating anything more than 5 times if it's not necesery. If the state that you're in is more coplicated, you might need to type something, log in and do some crazy stuff to get to where you're debuging, then you see how much more anoying that gets.