No, I get bored witless in planes and the comforts are quite few as it is, now they want me to stand!! I will choose another method of travel or stay home!
Definitely not. I don't even fly economy unless I have no option - and experience has taught me not to fly Ryanair so whether they adopt the plan or not is irrelevant to me.
This would be a serious air safety breach as in the case of an emergency, passengers without seats would not have access to oxygen and could also cause congestion in case of an emergency evacuation.
The point of the brace position is to protect the head in an emergency landing/crash. You wouldn't be able to do that when standing up. The thought of all of those injuries caused by flailing heads doesn't bear thinking about.