I love its simple UI.
I have used and love it.
We can create any number of nodes.
Change themes as well but are predefined

Number of features I want to include in future
1. Add more types of emoji's or images to it.
2. Change the lines to free form, straight or round.
3. Ability to change the colour of each node with our choice.
4. Ability to add independent node/topic within same mind map
5. Ability to link one mind map node to other document