I was thinking "Vernal" because it plays on both Equinox and Spring, but
being an adjective I think it would probably be confusing to use it as a
noun. Solstice is nice though.
Enterprise Components Warp sounds terrible. If it has to be a three-letter
acronym then I prefer the original ECP.
This is actually a very important decision. The name is going to appear on
thousands of CVs, resumes and job advertisements in the future :-)