Would anyone else find a list-of-lists useful such as: 
red, blue, green; Red Box, Blue Box, Green Box; 3.99,3.99,4.99
I feel like this could speed up repeating groups that use sub-repeating groups by pre-forming text lists in one field and then extrapolating them by list-of-list item#. I feel like this would be less taxing on browsers i dunno any thoughts. I mean i suppose you could create a text string already that way BUT i don’t know if bubble can easily break that back apart an reference it by index / item number.
I think this could be done maybe with some plugins, or scripts, but be nice native in bubble.