Favourite feature 
Favourite future feature! (try saying that 3 times fast).
This has been very handy to extend my existing reports. It would help if the formula fields were able to literal upload. I often need to create a custom formula field in an underlying database to display on a Report but the AI mangles the formula. So I end up doing a “cut and paste” to create the formula field. But the MCP access is helping a lot!