Having so many pre-builtagents on boot is confusing

**Motivation**
Having 3 pre-built agents up front is cognitive overkill. Also, if you each human adds their "Fizz" to the same channel there will be like a million fizzes

**Proposed solution**
I like that you have prebuilt agents but you should let users pick an agent name and from a set of usecases for what they want help with.

**Alternatives considered**
What other approaches did you consider?

**Additional context**
Anything else that helps — links, screenshots, prior art.

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