Multiple connectors for specific keyframes

[ceznov]

Is your feature request related to a problem? Please describe.
I like to keep my character animation within one long composition since I animate music videos and proper syncing is the key. The problem starts when I have some cycled animation like walk or run. The simpliest way to make those cycle longer is to copy and paste the keyframes multiple time. Unfortunetly if I want to make some changes in the cycle later I would need to change all the pasted keyframes which is lot of work.

Describe the solution you'd like
I would like to have kind of the connector which would work only on selected keyframes on within a specific range. Then I could nest multiple keyframes along the whole comp into multiple connectors.

Describe alternatives you've considered
I tried to use loopOut expression but unfortunately I can use it only once on every property and I would need different loopOut on every cycled animation. I also can't use loopOut and time remaping if I precomp my composition because there are also layers that are synced separetly during the whole comp so if I loop only the part of the comp the sync will be affected.