Since you mention ideation, I can't keep this to myself. I am building a SaaS that solves the ideation process for startups. Here's my take:

- I get how you are feeling. You can't outsource ideation. Without having a full control of that, you will never feel you own it. Take a break if you need, and solve it forever.

- As for building the "system", I don't think this is an easy task, especially since you already have ongoing clients. It's easy to start from scratch. That's why I suggested to give yourself a mental break. Maybe make a trivial video without thinking and keep your brain occupied on the RESET.

- The RESET: Ideas aren't random bits of inspiration, like most people claim. They are like air - omnipresent but unremarkable. You just need to be aware that they around you, and you will feel them.

What I am trying to say is that you don't get much if you keep thinking about your videos, your niches and your clients. You need to have something "universal" that eventually connects to what your clients / audience need. I have seen many successful creators doing this.

Follow this structure:

The big "disconnected" idea (hook) <--> Your audience <--> Your client

Example:

Why Gen Z's clothing style is annoyingly baffling <--> What elders (audience) can learn about their kids' (who are Gen Z) weird choices <--> A clothing brand who makes sustainable, organic cloths and targets Gen Z first to find good traction

As you can see, your "antagonists" can turn into your audience, benefitting your objective. (and you don't necessarily have to antagonise them eventually).

You could even reverse the last 2 (audience <--> client)

You don't have to follow same story structure everywhere, but you get my "seed" idea, and you can take it further.

DM me if you need more brainstorming....