I take it this is different from the NodeRED[0] thing IBM released a year or two ago? So, if node.js proper was closer to v8 HEAD, then they might find that the v8 team has recently been supportive of utilizing "precompiled scripts" (in v8 parlance). And I don't believe divorcing node from v8 is hard. Nobody is interested[1] (long term) in supporting such a divorce. For the most part, creating an API that would support both at the same time is maybe a month's worth of work at most.
[0] https://gigaom.com/2013/09/27/meet-node-red-an-ibm-project-t...
[1] https://github.com/zpao/spidernode