Design enhancement

[mjanos10]

Hi!

I would like to ask for some design enhancements for this plugin, as it becomes quite cluttered and non-user friendly when a user adds multiple elements especially when sub-elements are also involved.
My best bet so far would be to use material Cards for this issue, which can be easily nested inside another. This would make the design much clearer to follow. I would also suggest, that these cards should use the expanding capability of the material-ui cards, which would make the pages less vertically long. But this also raises the question of what the users should see when the card is collapsed.

I have read in one of the admin-on-rest issues that they for some reason (maybe even technical reasons) don't like this idea. I don't really seem to get why, though.

What do you think?

Also, I'm not trying to tell you what to do, I'm merely trying to get a conversation started about this and would especially love if a UX maestro could jump on in this issue :)