We had been thinking of incorporating apple imagery to speak to the "Big Apple" location of the meeting and our theme of "Explore The Core". We may be able to include "Slices of The Apple" being a kind of sub-theme ("Social" Slice, "Education" Slice, etc.) but don't want to clutter the logo. We also talked about "Core" being incorporated into the mix. "EnCORE" for the final night, etc. Our idea is also to sell the unique SoHo location as the destination versus just NYC.
We might want to consider a similar font to that used by the host property, theTrump SoHo:
http://www.trumphotelcollection.com/soho/