Hi, Since you did allow small tree, take note of this from another thread.. from a Viburnum expert (ViburnumValley)
".. I'd suggest a really easy grower, the native Viburnum dentatum. Arrowwood Viburnum grows with abandon, will get every bit as big as what you currently have, but will have late spring white fertile flowers which when adequately cross-pollinated will produce dark blue fruits which birds relish. That means you should plant two different named selections of Arrowwood Viburnum, like an 'Autumn Jazz' and a 'Chicago Lustre'.
Following that plan, you will have attractive flowers, copious attractive fruit, bird food (which will drop the seeds to produce more plants), and reasonable fall color across the yellow/orange/red/purple spectrum. Not too shabby."
Now, to find those chosen cultivars, that can be the hardest part. When I started out, I remember hunting down a pollinator for my V. triloba.. which must have died at some point anyway.