This change is indeed designed to effectively eliminate risk and was incorporated into my easy GT configs as an incentive to actually use bees in singleplayer rather than hit the grind wall, sigh and give up. I make no secret of the fact that I find default Forestry to be very poorly balanced and overly grindy.

Either Euius or I am right depending on what you actually want, KD. This change makes breeding full set of bees much, much easier to achieve, that's the whole point.

If you want some decent risk, set it to 15%. The defaults are fairly punishing to the novice but not insurmountable by any means so 30% is another option, or you could go the Euius route and up it to 60%.

IF you raise it consider the fact that it will make beekeeping unpalatable to most users.