I would love the list widget to be able to reference multiple data sources. I have already posted about my use case, but to sum it up: I have three layers with identical schema that take part in an app. I want to display their information in a list that a user can click on to zoom to a feature, among other things. But the application is incomplete if I can't use multiple layers
My workaround (from the linked post) is to write a query that dumps the attributes of the three layers into a table and use that table in the list widget. This gets me most of the way there in terms of seeing all of the features, but lacks crucially in two areas:
1. The query table obviously does not carry over attachments from the original layers.
2. Using a table in the list does not allow for zooming behavior to other layers on a map.
