The college professor would have advanced usages of those skills much like the rogue's thief and assassin. With Nature, they can find and extract magic elements out of magic creatures. With Medicine, they can buff the cleric's healing. With History, they can identify situations that happened once before.The college professor with a little fencing feels like a bard with no magic or songs - but even better rolls on knowledge checks. Or maybe the college professor with a little fencing is a rogue with no back stab - but better than bard roles on knowledge checks. Giving up all of the magic and songs for bonus knowledge checks feels like a nerf to me.
At high level, the scholar would become like most classes and hit the epic. For scholars, yes that is super-science. Here comes your monstrosities, fantasy steroids, and an arcane LMG at level 16.Do you want "Super-Scientist" instead of "Scholar"?
If so, I retract my complaint about everything but the name.
A year of downtime with the level 20 scholar and the party fighter is a Space Marine.