I agree with the sentiment that the catacombs kickstarter is a load of crap deal.
I have never done any homebrewing but I think this situation calls for it.
I think I would just be working off of the new content they are developing as I have the original and expansions.
I figure if a game was ever a good candidate for homebrewing it's a game like catacombs where the art looks like it was made by
Using their opposite hand to draw while blindfolded. Ok I guess I can't use the new board by not spending $130 (really!?! That's a solid down payment on a ps4) but there is always this:
boardgamegeek.com/image/1911433/catacombs