We add new fields (or redesign existing protos) very sporadically. We also don't have fully automated process to deal with a change in a proto within all projec

We add new fields (or redesign existing protos) very sporadically. We also don't have fully automated process to deal with a change in a proto within all projects so by using new versions we can signal to the developers that they should eventually adopt it. We are actively using 5 languages that have to deal with the changes, so we found it easier overall to do it this way.