Yeah the mid/late game wizard should be very good but the early not worth i think. I have no idea what they did on Mind Blade so let wait and see.
As a matter of fact, wizards in PoE actually start off very strong, what with their fan of fire dealing 70+ damage, or their ability to use bows and suchlike.
Allow me to compare your PoE wizard with a BG1 AD&D wizard.
Your BG1 wizard starts with a grand total of 4 hp, 3 level 1 spells known, 2 casts per rest.
Your standard Magic Missile spell starts at a single missile dealing 1d4+1 damage.
At this rate, even a stray cat