Combat maneuvers and backwards compatibility

[Dan Davis]

Many stat blocks for 3.5 give a creature's grapple bonus. In most cases, that's the creature's CMB as well, and you just add 15 to get their CM DC.

But when it comes to larger and smaller creatures, the math doesn't work because 3.5 grapple gives a +4 bonus/penalty for size differences while Pathfinder doesn't.

In the interest of backwards compatibility, what about making the CMB for monsters larger or smaller than medium scale the same as they do for the 3.5 grapple rules?

[Krome]

While I can see the desire of backwards compatibility for this, the old grapple rules were just plain broken. This is one area where backwards compatibility should be sacrificed if necessary.

This thread presents what I feel is by far the best solution to CMB numbers, and I think it would not be compatible with old grapple numbers.

[Backwards Compatibility]

I'm okay with the new ruling. I'm not made of glass, you know. I'm prepared to put a little bit of work into this!