Economizer is nice, but not essential imo. A player can do just as well with the proper use of Mana Converter and oils.
@1-With the addition of Deus Ex Automata, any time i am sort of idling, i will DAD whenever Activate recast is set. No reason to be a slave to that timer anymore at all.
@2-I agree here as well. Though i think you meant Soulsoother