I am very glad to hear that Modified will be E-on. Having done some experimentation with E-on (the first Modified I ever tried), I must say I like it as a format. Plenty of deck options, good base of Pokemon and Trainers, and an overall environment that, at least at present, seems very balanced.
Not having the Best Promos hurts a little, but we'll adjust. What I don't like is that every card E-on has for drawing or hand-changing is a Supporter, now that we don't have Elm. This is probably not going to change soon.