Reed Richards is more intelligent and he can do more about technologies and better stuff than Iron Man.
Why can't he be better?
If it's his powers make him not suitable, he can make one for one of the members of Fantastic Four or even create Fantasticbots which could be better than Doom's Doombots.
He can create hundreds of Fantastinels (better than sentinels) to protect people and stop crime.
Why can't he?