Hi YangSea, that's great to hear :). Twos is similar to a digital bullet journal.
1. You can use dash or bullet for notes in Twos as well. My default *thing* type is a dash and rarely use the "note" type of *thing* since I mainly just want to write *things* down. Events are just reminders in Twos. You can add a reminder to any *thing*.
2. I usually use the dash for events and then just add a reminder to them.
3. Yes, some people prefer the bullet over dash. I use the dash, but some people have a different preference.
4. There is not currently, but we want to expand the types of *things* and allow users to create their own so in a sense it will be close.
Please let me know if you have any other questions :).