The fatal flaw of amateur family drama is the "Evil Relative" trope. A villainous sister who cackles while stealing the inheritance. A mother who is pure malice. These characters are boring because they are unreal.
Real complex family relationships live in the overlap of love and hate simultaneously.
Consider the spectrum:
Great drama happens between 4 and 7. It is the sister who steals the money but shows up at the hospital at 3 AM. It is the father who ruined your career prospects but cries at your wedding genuinely.
Dialogue Trick: Have characters say the opposite of what they mean. The fatal flaw of amateur family drama is
Every great family drama relies on a specific alchemy of personality types. Placing these archetypes around a single dinner table creates a chemical reaction guaranteed to produce conflict.
To avoid "soap opera" territory, your family drama must have these three elements: Great drama happens between 4 and 7
Nothing forces a family to confront its dysfunction like being trapped together. This is why so many family dramas take place during holidays, long car rides, funerals, or isolated vacation homes. Remove the exits, and the masks come off.