Kelsey, thank you for your input on this topic. How are Operations Dashboard and Web AppBuilder apps used in your organization? Is one more prevalent than the other? Is there a move to standardize on one of these clients? Do you want the same functionality provided in Web AppBuilder?
I have been working with Esri product owners regarding the new Operations Dashboard, and we are looking to leverage built-in functionality to integrate this new application with PI Vision. This integration is minimal at this time since the application is still in Beta, but I did write up a blog post on PI Square with more details. Please take a look and let me know your thoughts. Feel free to send me an email directly if you'd like to talk more: https://pisquare.osisoft.com/community/all-things-pi/pi-integrators/blog/2017/09/25/pi-vision-operations-dashboard-for-arcgis-beta.