Here's what I did to get the children task names and status keys to show up. You can adjust the value expression to meet your needs but there are limitations. If you need to sort or do any conditional formatting, I would recommend going with Madalyn's suggestion. displayname=Child Tasks and Statuses...

My guess is the MID function is not available. I replaced it with this:LEFT(RIGHT({phoneNumber},7),3) This pulls the right 7 digits (removing the area code) and then grabs the left 3 digits of that result. This worked for me in a quick test. Full expression: valueexpression=IF(ISBLANK({phoneNumber})...

From my limited testing, I was able to get the dashboard filters/prompts to work for reports that I created while in Canvas Dashboard. If I added an existing report that was created in the standard report , the filter would not apply to that report. 

We have also struggled with the lack of notification on for approval results - specifically around when you submit an object for approval and not receiving a notification if it was approved/rejected. I created a flow in Fusion to do a tagged update to force an email. If you want to create a report o...

Just to add some more feedback here, I have the same concerns that you both have brought up regarding losing the ability to customize this area. We are not on the unified experience in any environment but I am able to see the toggle in Preview. While I do think the Requests area could use some impro...