The time to buy Sub is before they release the next step in their development, especially with the price coming down over a dollar from all-time highs.
Plus, this isn't some sort of speculative coin, like most coins out there. The actual crypto has a use-case, and you can get passive income doing nothing once the Sub network is up just by letting it run while you're inactive (it will even run while you're active, just not at full capacity).
This is a 100% speculative coin.
1. We don't know if the Devs are capable of delivering
2. We have not seen any sort of technical discussion. This community is full of Lambo and Moon talks.
3. There is no working product yet.