What changes are specifically in the GlassFish bundle

Before 2.2.5.Final versions of exported packages did not reflect API changes - all weld packages did have version 1.0 (i.e. the current Weld version). However, there was some GF integration code relying on this bug. 2.3.0 GF bundle also contains jboss-classfilewriter as mentioned above.

Also note we are building Payara forked from the GlassFish code base so don't need a "drop-in" replacement.

Ok, then you should use the regular bundle and modify all relevant configuration code. Anyway, it's odd that you have to add the aforementioned imports as the manifest contains all the referenced packages...