Stickiness for groups / items instead of linking them to top or bottom.
For long lists and nested lists (transactions, order line items, calendar events etc.), it would be great to be able to designate a sticky position for a list level 1 item:
Eg, list 1 contains a group:
DATE
The nested list contains transactions:
TXN 1
TXN 2
TXN 3
Let’s imagine the page header is 100px deep. It would be amazing to be able to set the ‘stickiness’ of the DATE group as 100, so that as it scrolls up, the Date stays ‘sticky’ until the next one arrives (then the next one stays sticky) etc.