Recombinator

Should have a flat 50% chance of success and lose like 7% per extra affix. Maybe 33% if you really think it would be that bad for people to have TWO useful affixes on an item.

This feature was presented as a way to give us more crafting options, when in reality it's another layer of gambling, with pretty bad odds at that.

The only viable use case is to try and combine a T2-3 affix with a lower level one that can still be good. This will result in a mediocre 2 affix base about 40% of the time, which you can then proceed to brick with exalted orbs because it's rare and cannot be upgraded with essences.

Anything above 2 affixes is a joke with <1% chances of success.

I don't know if craft of exile has the odds, but it's probably 100x better than the odds of transmute, aug, exalt.