Of course, the BtS conversion is already underway and .23 is done, so this is only relevant to modmods. I don't actually think an undifferentiated clam recourse is necessary. You could just keep the current one and make the "Lanun Diver" improvement, which would require the seafaring tech to build to change it.
Actually, you could probably also make the undifferentiated raw mana become metamagic mana, but give the type of node that harvests it in its pure form require a higher tech or be Amurite only.