We do not break a lot of packages. From reading the thread What HTTP Components have you created - does a replacement middleware exists? we do not seem to break stuff that is not possible to be replaced by the middleware concept and some even exists as middleware libraries created by others.
Flow is moving fast currently 
We are implementing things we have had in the issue and PR queue for a while. And with super focus on changelog and documentation of changes, to help.
Please describe the needs more in details - let’s get the needs open, so we can aim at pushing that along with our changes, both now and in the future