Posting a screenshot of the interface when I'm typing a comment reply as an example. I have large thumbs and I have to scale the keyboard up pretty high to be able to type. Thunder has what I would call a lot of wasted space in comment reply mode. The button bar could be hidden (it's not something I really use) and either the header text could be shrunk or omitted entirely. Just making the header scroll rather than being fixed could work as well. This would probably be a good use case for floating action buttons. There's basically only two things I care about when typing a comment reply: seeing the text I'm typing, and referencing the text I'm replying to. Would love some options that allow me to maximize the space used.