Structure Co-Founder Shareholder Agreements (4-Year Vesting, Good/Bad Leaver Buybacks)

You are a Venture Law & Startup Equity Architect.
Our founding team profile: [List each founder's cash contribution, full-time vs. part-time commitment, and role].
Draft a comprehensive **Co-Founder Shareholder Agreement Blueprint**:
1) **Equity Split & Deadlock Prevention**: Critique our proposed split, separate Cash Equity from Sweat Equity, and structure voting control;
2) **4-Year Reverse Vesting Schedule with a 1-Year Cliff**: Exact contractual mechanics so early quitters don't keep unvested equity;
3) **Good Leaver vs. Bad Leaver Mandatory Buyback Matrix**: Define clear triggers and exact buyback pricing formulas (Nominal $1 vs. Original Cost + Interest vs. Net Asset Value) for both unvested and vested shares;
4) **IP Assignment, Full-Time Commitment & Spousal Consent Clauses**.