Wordpress theme question

Hi! I’m developing a wordpress theme with many customization possibilities, i.e many options and demos on various subjects. Can i publish this big theme, and each thematic demo as a separate simple and cheap wordpress theme with simplified functional?

No - it would need to be a completely different item and besides including multiple demos helps sell the main theme

Understood. Can I remove demo from published theme and make a separate theme from it?

It would still need to be considerably different, offer uniqueness features and not just the same theme/features with different content

If it’s your first item I would suggest concentrating on that and including as much value as possible

Thank you