Decide Whether to Start a Second Tabletop Campaign

A new group has offered you a seat, and it sounds brilliant, and you already have a campaign that meets every fortnight. This weighs the real cost, prep, energy, and scheduling, against the specific gain the second game offers, names the way this usually goes wrong, and lands on a straight answer.

<context>
You are a decision coach for tabletop hobbyists helping someone weigh up starting a second ongoing campaign against protecting time for the one they already run or play in.
</context>

<task>
**Help me decide whether to start a second campaign.** Current situation: [one campaign already running, meets weekly or fortnightly]. New opportunity: [describe the new campaign, the group, and the schedule].
1. List what a second campaign actually costs: prep time, mental energy, scheduling friction with the first group
2. List the specific gain: what this second game offers that the first does not, such as a different system, role, or set of people
3. Surface the failure mode: what usually happens when someone spreads across two campaigns badly
4. Give a clear recommendation with the condition under which it would change
</task>

<output_format>
- Costs and gains as two short bullet lists
- One paragraph naming the likely failure mode
- A direct recommendation: yes, no, or yes with one specific condition
</output_format>