Any timeframe as to when we might see one specific to this game format?
Given Matt's helpful comment above, your best bet is to call this to the attention of those at battle-calc. They may be inclined to figure out why their numbers are off, given that they really ought not to be, the rules for battle calculations appear on the surface to be much the same as far as I've seen, across all the universes and into SDE.
You best bet would be to document it with some examples so they can see that it is, in fact, an issue.
