How to make Structure Condition??

I saw that many of the structures functions were moved to Features, which is not a problem, then I saw that there is no longer a way to set a condition for structures being created, and it is big problem for my mod because structures can be turned off by gamerules, and now I no longer see this possibility, is there any kind of solution for this? any kind of workaround this issue? will features have terrain adaptation in the future? Will structures gain condition back? 

If it has already been clarified somewhere that both of these things will not happen, I apologize