No shutters.

If you think it looks "naked" without shutters, you could add an additional painted treated board to increase the size of the frame around each window -- white or a different shade of the same color as your exterior siding.

https://www.google.com/search?q=images+windows+with+wide+frame+exterior+view&tbm=isch&tbo=u&source=univ&sa=X&ved=0ahUKEwi9_LvBp-PZAhVCyVMKHY_UBcQQsAQIJg&biw=1314&bih=588#imgrc=lEjpx5sGrvVJfM:&spf=1520738270445

Even if you don't want a front porch, consider adding some kind of awning or roof over the front door.

Here is a link to a couple of excellent articles about shutters. I agree, your home looks better without shutters and beefing up the trim around your windows might be just the thing to do.

All About Shutters from Old House Guy

Shutters vs Shudders

Another thought: You have a second door with a small porch on the far right of the home. Have you considered adding a sun room there and having the door(s) to exit it on the right side of the home rather than having two doors facing forward?

How about a red door or some other color to punch it up?

Shutters definitely and a dormer over the front door. The color is nice for the style of home and the front door would look lovely with a red brick color paint on it the shutters I would do in a country white

Great suggestions! Thank you. In another year, we'll add a garage on that right side. With the breezeway already there, it's a no brainer. I like the idea of thickening the white border around the windows. We'll probably add new siding when we do the garage (it is actual wood siding now). Does it make sense to do anything (aside from window boxes) until then or is it relatively simple to work around/replace?

Your front door appears to be a craftsman style door, not one suited to a colonial home. Your windows, too, lack muntins. Do you have the ability to add them? Operable Shutters of the correct size can enhance the appearance of the house, but aren’t necessary if your window trim is thicker, I suggest that you look at 18th century early American homes for inspiration. Your home is lovely!

Since you plan on adding a garage in the future I would hold off on all changes for now and do one big exterior Reno with the garage, so all your door and window trims and colours would match your addition.

No to shutters; yes to garage extension.

hi great question! personally for me no shutters. Shutters are for a purpose, to close and protect your windows. Decorative fake shutters are not maintenance free, dirt accumulates behind them,
they get dirty after awhile, those bees that make mud nests tend to get behind them to build nests and other insects. Overall it would not add anything to your beautiful home. Hope this helps!