Access to Master Properties of a Comp Inside a Dynamic-Linked .aep WITHOUT Export to .MogrT
Currently, in order to provide access to editable parameters of an After Effects composition from within Premiere, it can't simply be imported via Dynamic Link as a native .aep file in the traditional manner. Instead, it needs to be exported to the MOtion GRaphics Template format and then installed from Premiere. The rationale behind this requirement is completely unclear.
It would make much more sense for the master properties of a comp (if any were set up) to be accessible in Premiere regardless! In other words, as long as there is a single parameter added to the list of the composition's master properties from the Essential Graphics panel in After Effects, that parameter should be available in Premiere even when the comp is brought in as part of a plain .aep file (not a .aegraphc file).