Trees/shrubs with open/interesting branching for zone 5?
I have a pussy willow around 18 feet tall, it has around 30 stems coming out like a fountain from a central point. I really like looking out the window and seeing the branches silhouetted against the winter sky, and in the summer I like that the canopy is open and lets lots of light through. it's to the northeast of our house and couldn't give much useful shade anyway.
The willow is no longer very healthy for some reason and I would like to replace it with something with similar interesting and open branching or interesting trunks etc. Looking around my neighborhood I see some ideas:
aspen for the white bark and multiple trunks/clumps
Birch for same reasons
Fruit trees that have been pruned
Some maples, I think they are Tartarian or Amur
more pussy willows
The sumacs are closest to what I am looking for because they seem naturally interesting looking, and they have good fall color and the fruit? spikes that last through the winter.
Any other ideas? I want something that will get to at least 10 feet tall.