Well, this looks indeed like god mode.
After some more reading the closest thing I saw that fits my idea of a fighter with magic buffs was:
A hexblade warlock with pact of the blade.
You have martial weapons, medium armor and shield, defensive and offensive spells, a second attack and most importently: You can use charisma for both spell and weapon attacks.
A high charisma main char looks also good for social skills.
Well, I should stop speculating for now and wait until we know what is actually in the game.

Prof. Dr. Dr. Mad S. Tist

World leading expert of artificial stupidity.
Because there are too many people who work on artificial intelligence already