The market for percussion and drum libraries is huge. It would be super cool if we could build custom Acoustic Agent/Percussion Agent-style libraries for Groove Agent inside Halion.
Not only would this give them a more professional look, it would also make it very easy to make libraries compatible with both Groove Agent and Halion, which might help further increase public interest in both.
For Halion users unfamiliar with Groove Agent 4, check out the Simon Phillips Studio Drums and Nashville expansions for examples of what you might be able to do if this feature is implemented. Cubase’s Groove Agent SE 4 can run them.