I personally WotC shouldn't restrict them too much.

And it seems they'll return to the Vancian magic system which I detest. I don't see what's wrong with a fatigue or mana based magic system.

I think WotC should choke all Wizards till they either die or go to MtG where they belong.

Kidding aside, they were OP. Second most OP class, the only thing beating them being Clerics.

The old system made magic wielders too powerful and with too many options at high levels.

Yeah. From what I read that WotC intends clerics to be background/theme based. So not all will be mace-wielding, full plate, combat casters.