@jcboy,
I get loving the arch as a form. It has nothing at all to do with your house, much less being a tack on. (I know that is curt)
I'm interested in the nature of buildings. (watches all fall asleep)
I've seen LA tract houses become near preservation idols and seen them turned into unrecognizable design efforts - for decades. My thesis was on a Neutra house, and I love the Gregory Ain houses.
My main point is don't **** up your house, however small, it has its own presence. And I come from Venice, CA, where architects started to play and still do. I was there before they started.
I will also admit that I've disagreed with myself on this for money - you should see what happened to our last big project, that I much regret, however much acclaimed at the time. I liked it the way it was to start with.
Venturi - as a start, from wiki -
http://en.wikipedia.org/wiki/Robert_Venturi
Not that I agree - but that is a trace of where architecture has been.