It would be nice if you could select an option to stay logged in permanently. The current checkbox for "Stay logged in" only lasts for ~2 weeks, which is a somewhat odd choice. It's plenty long enough for someone with illicit access to wreak havoc on my account, but it's also short enough to be rather annoying. In fact, it's annoying enough that I don't use the desktop version of the app. Instead I use the web interface, since my password manager will re-login automatically for me (which makes the security benefits of the 2-week limit a bit dubious). My computer is locked (on a much shorter timescale) with stronger authentication than my RTM password, so I'd rather rely on the former for my security.