No the game should allow anybody to play how they want. If I want to play as a god then I should be able to do so. If I want to be an archer and nothing else then I should be able to do that, and if a want to be a spell wielding arrow shooting mace hitting Orc then I should be able to do that as well. Don't blame the game if the character you play becomes to powerful simply because you are unable to limit yourself.
Of course, but still remains the fact that the game is to easy

Even when limiting yourself, its an ES game feature, Morrowind was easy, Oblivion was easy, Skyrim is easy. The cure from learning the game, to knowing the game making it easy is to low.
No matter what kind of toon you play, once you got perks going, gear and levels you just walk trough everything, some a bit slower then others but still a walk in the park. Just like Oblivion, this will need some serious modding. Way tougher mobs and more of em and less loot, so it isnt easy to get the enchants you need.
The enchant system now is one of the best in ES, problem is, theres to much enchanted gear around, if it becomes a rarity to find enchanted gear it would already be a step towards making it harder.