I'm not a VC player, but I've seen some games there and GR psychs are valued no less than phoenixes, and considering the possibility of starting with Moner, they are actually the main stack. In general, Conflux isn't an outsider on any template anyway, so I see no point in buffing it.
The only weak point for Magic players is Dragon Utopia; they get chewed up there regardless of life steal, but otherwise they are very decent fighters, and the upgrade is made at the first possible opportunity.