I've thought of that feature also, esp when I was first starting out with the Arduino. However I think that learning the harder/manual way is necessary if one really wants to learn the craft of programming. The IDE does have a brace feature of showing what opening or closing brace matches what you have entered so there is a way to keep track and check ones work without having to compile and have to read all the red *hit compiler complaints. 
I recall years ago learning turbo pascal, with all those begin/end errors. ;D
Lefty