Lord Sovereign
The resident Britbong
That wouldn't solve any of the problems people had with Wesley in any way.
In a weird way, Master and Commander: the far side of the world, effectively executed semi-Wesley like characters quite well. As it's set during the Napoleonic Wars aboard a British frigate, there are a bunch of midshipmen (effectively officers in training) who are incredibly young, approximately twelve years old no less. Now child characters are usually infuriating, but you end up really liking these kids as they grow into their own as proud officers of King George's navy. But there's the thing: whilst these young uns do help out, they are still children and junior officers at best. They are learning from those older and wiser than them instead of showing up their superiors.
Portraying Wesley as a very young man having to earn his place aboard the Enterprise and eventually come into his own, preferably in battle, could even serve as an emotional anchor for the audience. Granted, you'd have to rip out a lot of his super skills, as his arc would be becoming a good officer of Star Fleet/becoming a man instead of being the super duper bestest at everything with a special destiny Gary Stu.