Either is fine, here or a PM
We will fix and patch up, just small ideas or even a concept will work. I can come up with quite a bit with a concept out of nowhere (I've done most of the quest ideas so far)
So yeah

If you have the whole thing planned out great, we will look over it and then see if we accept it or not

If you want to make surprise quests, it is better if you PM one of us, Caits, El_Tigre or myself. (Like the one I posted for great_hellup earlier)