Is it possible to change existing build in panels in Premiere Pro?

[Wayne42]

Topic

This is an issue regarding:

• The samples contained within this repo.
• The documentation contained within this repo.

Versions

• CEP version(s) used [must be 8.x+ for this repo]:
• Supported CC app(s) and version(s):

We want to build a plugin, which needs to add to some other default panels build in in Premiere Pro. (Timeline)
It is crucial for a good UX.

Is this possible somehow? Or are we limited to our own created panels?

[Wayne42]

If anyone is interested in the answer: most likely no. It should be impossible if not hacked.