[Alienmario]

For the brackets, it's quite simple. For example

public void OnPluginStart()
{
	// comments and string literals bug this
	char a = 'a';
}

Remove method contents and position yourself on { or } and highlighting will start working.

I hope you can eventually find a way to fix the performance but it's fine if you don't. Just a little thing to put up with.

Some other ideas if you're open: customizable build shortcuts, shift+enter to create new line and jump to it, block comments, ability to show whole document in minimap.