#One time bonus for Nice Questions

This probably won't be implemented. But it seems to be exactly what all you want:

* Easy questions getting a lot of upvotes won't be affected much.
* Questions having a lot of upvotes and downvotes won't be affected much.
* New users writing bad questions won't be affected much before understanding this situation.
* Questions having 10 upvotes and no downvotes would be awarded more.
* Writing many good questions is preferred to writing one extremely popular question, so it really encourages writing questions, instead of posting the idea you had anyway or just being lucky.

If changing reputations for upvote / downvote isn't the perfect solution, I'd think it is understandable not making any changes only to revert the changes after problems happen.