I am a Scala developer but I agree with your points. The only thing that just simply drives me mad in Rust is mandatory semicolons. Once you are used to be able to omit them then it gets really annoying to go back using them.
I actually agree with this one. :) The usual argument in their favor is that having to explicitly return `()` all the time would get tired in low-level C-alike functions that mostly operate via side effects, but I'm not particularly swayed that we should be optimizing for that use case (but then again I'm also of the opinion that bitwise operators don't deserve their own symbols, so I may already be an enemy of this crowd :P ).
