Best method for filling in faces in complex/irregular area What would be the best method for filling in faces in a complex area, like a key (see image below)?
Does Blender have a tool for handling situations like this quickly?  Or is there a few ideal tactics for handling a situation like this?

The solution I settled on is shown below below?  It looks to work fine with the subdivision modifier.  Are there things in this solution that should have been avoided?
In my opinion your topology is a bit messy and you don't need as many vertices, but is it really important? You should not have any artifacts because I suppose it's going to stay a flat surface, you could even use huge ngons. Also don't hesitate to use tris on the round corners:

But here is a try with a bit simpler topology:

or even: