@robertokc. Although I agree with what you're pointing out, I kind of like the lack of buttons on my controller. My landscapes were constantly changing my schedule on me and it drove me crazy. When I installed the Rachio that stopped! Of course the first time afterward that the landscape came out, I found my system wasn't watering for a week. It turns out he wanted to disable watering while he was there. He couldn't do it on the Iro, so he shut off the water supply with the manual supply valve and forgot to turn it back on before he left!
I guess with buttons I'd just put a lock on the box, no big deal. I just found it a bit comical to think of what he thought when he saw a slick white box with just a button and some cool LEDs.