A lot Man
First is "black or dark theme background, since i did not like the light theme one. Second, the twitter logo on the top left just eat the space (not to mention the home, mention, trending, and profile logo also need to become smaller) really need header size like Twabbit or MeTweets. Third, there is no option for showing image in line with the timeline. On the latest version (3.2.0.28451), there is Bing translation, and there is no way to turn it off, FYI, i really don't need Bing translate my mother language (Indonesia) to English for sure