Thanks for trying it out and your feedack!
1. I've added a description for the themes, but you're totally right. Need some kind of indication as to what they are. I'll see how I can improve it.
2. I've considered this, and it won't be too hard. Will definitely think how I can include this in an intuitive way.
3. Thanks for this. I overlooked it but I've realized now that this could one of the biggest QOL improvements to the tool for now. Will work on it next!