Eric, Adobe discontinued Live Cycle Designer a few years ago. They replaced it with Adobe Experience Manager Designer. They also made a lot of changes to Acrobat Pro. They removed many features from it for a while but brought them back in a completely different form. Two examples are the Global feature that you mentioned and the radio buttons. Global attributes are now set automatically when designing a form in Acrobat Pro. In AEM Designer, you can have the Global property set or use the Local Name. The nice thing about the way Acrobat Pro does it is that you don’t have to remember to set the fields as Global. The disadvantage is that you cannot do customize fields the way AEM Designer allows.
Radio buttons in the old Acrobat Pro were a nightmare to program. They didn’t work at all in Acrobat Pro for a while. The completely redesigned radio buttons in the new Acrobat Pro. It is easier now than ever to create radio buttons in Acrobat Pro. However, like most things with Adobe, the documentation is not easy to find. If radio buttons are intuitive to a forms designer, instructions are not needed though because it is so easy now. As with everything else, AEM Designer give you much more control over how radio buttons work but there is also more work in setting them up.
The biggest improvement to Acrobat Pro, in my opinion, is that it now directly supports inserting images. It would be nice if inserting images worked the same in Acrobat Pro as it does in AEM Designer.
The biggest drawback to Acrobat Pro is that it cannot create XFA PDFs. My InspectorLogic Pro, Wind Mitigation, Four Point, Roof Inspection, WDO, WDI, etc. report are all expandable. The user can put in an unlimited number of comments and photos just by clicking on a button.