Absolutely not. I play with Warmode Off because I hate the inconvenience of random PVP and ganking. I live without the XP bonus and goodies. That's the trade off I make in order to not have to deal with the headache of PVP.
Being able to toggle it on or off easily within a zone completely defeats the purpose of having to make the choice. It gives all of the benefits without any of the downsides.
(Now, whether you feel Warmode is good game design is a completely separate topic)