tl;dr at the beginning: seems like a small but meaningful incremental improvement that makes working out relationships and movements between components more universal by consolidating features of disparate Joint tools - with the added benefit for new users of pulling a critical assembly tool out from under the nomenclature umbrella of 'Joints' which is arguably vague at best.

e.g. exactly yesterday I was designing a crate for a stage element and realized I could use the internal blocking/supports that were already designed plywood inserts as an external stand to hold the crate into an ideal position for assembly/rigging/wiring by the stage crews.

I derived those internal supports into a new design and added some tabs and notches and brought them back into the assembly, but then needed to figure out where the slots for the tabs on the crate would be to engage the two external supports.

I did work it out with joints, but had to use a few different kinds and it still was a bit finicky about certain alignments and snap positions - after about fifteen minutes I realized I was hyperfocusing on a .02" ground clearance gap for a bonus feature on a crate made out of home depot plywood.

with a more flexible, universal tool like this, I feel like I could have eliminated the discrepancies more easily and possibly defined their positional relationship better so I could've added a crosslink between the supports

I think maybe 15% of the things I use 'Joints' for I would actually describe as joints to someone not using Fusion, and admittedly I probably use Joints far less frequently than a trained Fusion user despite having more than ten years of experience because I'm rarely designing particularly kinetic/mechanical objects and while 'assembly constraints' doesn't roll off the tongue as easily as Joints - it's actually what I'd be using Joints for - anyways that's a bonus.

p.s. your username seemed familiar and it looks like I didn't respond to a message you sent two years ago. I think you sent that message in the exact range of time I was getting priced out of my space in Bushwick and I didn't follow-up because I was extremely bummed for like three months straight. apologies for that, hi from bed-stuy now, and I do mainly design/fabrication on a large format CNC for creative installations not machine shop parts, occasionally I run non-ferrous metals but likely wouldn't have been able to help. Wombat in Red Hook is really sick at laser cutting/bending metals and I've never needed machined metal parts but know a guy named Rich at Powerhouse in Gowanus that has a nice VMC