nginx configuration

The nginx-configuration by ispconfig apparently lacks efficiency.

My OS: CentOS7
Version: latest + HHVM patch

1. SEO-redirects are implemented by if-statements
2. subdomain responses (eg. *) is done by wildcards and if statement
3. ...

Example:

Code:

        if ($http_host ~* "^(.+)\.example\.com$") {
            rewrite ^ $scheme://example.com$request_uri? permanent;
        }

The more efficient solution would be a seperate server statement:

Code:

server {
  server_name *.example.com;
  return 301 $scheme://example.com$request_uri;
}

Am aware there is an issue implementing it, since it is a new server statement.
1. Am I mssing something?
2. Any chance to change nginx implementation by adding a 2nd nginx options-window, which actually adds another server block?

 

Alternatively: make rewrites a seperate vhost-file