Based on the Neos 3.0 and Flow 4.0 Release Plan, it looks like TYPO3CR will default to Neos.ContentRepository.
@robert any chance of calling for a vote on the name? Maybe Neos.Plasma since you didn’t care for Neos.Solid?
If not those try one of these on (and if not these, ContentRepository works in a blah sort of way):
Neos.IceNeos.CrystalNeos.GemNeos.BubbleNeos.OxideNeos.Nexus- (a)
Neos.Depotor (b)Neos.ContentDepot - (a)
Neos.Repositoryor (b)Noes.Repoor ©Neos.ContentStore Neos.Reservoir