I can't seem to find this in the list of issues/feature requests. If there's an existing issue/feature for this, please close.
I'd like to see auto closing parentheses, braces and brackets added. It's not the biggest problem in the world to have to manually type the corresponding closing character manually (throwback to the halcyon days), but it's a nice to have to save cursor positioning work.
For example, if I type
(
The corresponding closing character should be added and the cursor positioned between them:
(|)