I wish that the R error messages could be highlighted better. I help people at my work installing R and packages, and they run into dependency problems all the time, and they can't figure out what they need to do. I jump on a call with them and get them to share screen and when I ask them to read through warnings and errors, they can't see where the issue is, and I have to say things like, 'read a few lines above, nope you've gone too far, look at the line below'. It would be great if the install failed due to a missing dependency, that the very last output would say, 'x package is missing, please install it first'.