I have the original EZD on an older recording desktop that I no longer use. I have EZD 2 on my current recording laptop. Is there any use for the original EZD to be used with my current recording laptop?
In short: no.
You have the sounds and MIDI in the Pop/Rock EZX, so there is no need for that reason. Also, the EZdrummer 2 plugin replaces (overwrites) the EZdrummer 1 plugin, so they cannot co-exist on the same system.