Great ideas, thanks!!
I get asked to install ManglerMangler a lot, yet I never noticed that part of it.
I also used Datagrid a lot back in the day. On one site I set up a heavily modded version, and the next release of MODx completely broke everything I did in Datagrid, so that site is still using MODx .54321 or so.

I had even submitted a couple of patches that Gary put in, if I remember correctly.
Datagrid has a lot of good code in it, but I think it has gone entirely dormant, as I think this was one of Raymond’s apps. Still, I would probably not use it today. It can work great out-of-the-box, but due to the code structure, it’s frightfully difficult to modify, at least with my non-genius PHP skills.
I had had a discussion somewhere in here about Datagrid alternatives, and Jason had suggested looping through db result sets in a snippet and merging each row with a chunk containing placeholders for the fields. This sounds really sensible, and at the same time, more controllable than trying to follow Datagrid’s intricacies, so if I were making a datagrid today, that’s probably what I would do.
Thanks again!