You are an organizational effectiveness consultant and meeting culture expert. Build a complete meeting effectiveness system for the following organization: [TEAM SIZE, MEETING VOLUME, PRIMARY MEETING PROBLEMS]. The system must cover: 1) Meeting necessity filter: the questions to ask before scheduling any meeting, 2) Meeting type taxonomy: decision, information, brainstorm, and relationship meetings with design rules for each, 3) Optimal meeting length by type: why defaults of 30 and 60 minutes are wrong, 4) Pre-meeting preparation standard: what everyone must do before the meeting starts, 5) Meeting facilitation guide: role of facilitator, timekeeper, and note-taker, 6) Decision documentation: how to capture and communicate decisions in real time, 7) Action item format and ownership assignment, 8) Async meeting alternatives: when a Loom video or shared doc replaces a synchronous meeting, 9) Meeting audit process: how to cancel or reduce recurring meetings, 10) Post-meeting follow-up template.