Andrea,

- switch to "gang media" mode. Now only the Master track is visible,
but every change made on its keyframes is also applied to the other
tracks. (great innovation; more I examine the latest features
introduced and more I understand how powerful, comfortable and
functional they are. Thanks!)

Even though this feature was designed with the Audio users in mind, it turns out that we use this all of the time ourselves. GG says this is what the goal of "node-based editing" is and we have a kind of implementation already as an aside.