The issue there is that IIUC high magic involves actual interaction between the eight winds, rather than just keeping them in close proximity, & I suspect that said interaction is involved in the function of the waystones because why wouldn't it be?
Like, if windherding was actually just "high magic but slower and you need more people" I'd be all over it, but my understanding is that this is not the case.
Hm, do you know if we'd get a full action back by dropping the EIC now? IIUC it was previously a half-action alongside the Ducklings but with the latter being replaced by WEB-MAT I dunno if the half-action slot is still occupied.