With all the newest press releases being about C-Store content and comments made on stoked about new races and buildings and stuff being added to the foundry to keep it fresh, it naturally occured to me that there could be plans to charge for additional foundry resources to add better things to missions. Please tell me this is not going to happen.
Wouldn't surprise me. In fact, I'd say they're planning on it in the future.
Also of note, when they still had it on Tribble the missions limit was 8 missions. Published or unpublished. I suspect that they may have upped it to 10 on the Holodeck build if they are feeling generous.
But 8 is a healthy number to assume you have for total number of projects (until you try it!). But until they outline a specific plan, I think it's best to assume that any more mission slots might cost you something say in the C-Store like additional characters/ship slots.
I highly doubt it, its an engine that depends on high customization and we already have the ability to use C-Store costumes to customize NPCs in the Foundry without buying that content. They would have no reason to start charging the content produced when the parts themselves are the most likely starting point for such a campaign.