Hi Shinji,
I think the content would be absolutely identical, just a different label! I certainly don't think it will risk non-acceptance 
I really like the synergy of having 3 coordinated panel discussions within the program. I think that would stand out and be valuable from an openEHR branding/marketing view. Also sending a clear message that the openEHR community is rapidly ramping up.
It will likely be a useful counter to the usual HL7 panels that run each conference.
Cheers
Heather