Would you pay for a "pro" storage unit that gave you: 

- longer casts (10k chars)  
- upto 4 images or embeds per cast
- profile upgrades (link other socials, banner image etc) 

For creators, this would help level up their content and profiles. 

Assume it costs around $10/mo and revenue goes to weekly rewards.

Technowatermelon. Elder Millenial. Building Farcaster. 

nf.td/varun

I would keep it in the single digit range (like telegram) to make it a complete no brainer not only for those you actually want the feature... but also for those who want to support you, those who want the status etc.