1) Make some easier way to let users select multiple values for a single field in a query. For day of week, there are 7 days. for Query Widget right now, we are only able to quey single day, we could not query any combination of days, like (Monday, Friday), (Mon, Wed, Sat), so on so forth.
2) Web AppBuilder offers the ability to make queries where either "All" (the only choice in Operations Dashboard) or "Any" statements in the query are true. It would be nice to have the "Any" option available in Operations Dashboard.