I have a paid appexchange app which caters to all editions of salesforce. I was thinking of introducing new features which uses campaign object. But this would mean that group edition users would no longer be able to use my app.
Is there a way i can have my base functionality as it is currently and have a add on package which will use the current version? I did read something about extended package, but i am not sure if i understood the limitations or things i need to consider before going this route.
Also i see that i need to have this extended package on a different org. Would this mean i need to get this dev org also pass security review and pay the review fee?