So we all know how to access the patcher without using the web login, but there's a small little change you can make to your shortcut to allow you to skip the patcher that should work with both the web login and by using your shortcut. This isn't against any rules and it's not modding/hacking in any way, so don't worry about getting in trouble.
Anyways...
1. Go to the shortcut you've self-created [as your way to skip the web login]
You HAVE to create it yourself.
2. Right-click the shortcut, and go to properties.
3. In the 'Target' box, replace everything in it with this:
[CODE]"C:\Nexon\Mabinogi\Client.exe" code:1622 logip:208.85.108.15 logport:11000 chatip:208.85.108.18 chatport:8002 setting:"file://data/features.xml=Regular, USA"[/CODE]
The part in quotations in the location of your Client.exe. It may be different, by C:\Nexon\Mabinogi should be your default.
4. Click apply, and launch the game.
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Again, I can't take credit for this [I found it on a ...forum, that I frequent for other games], but please enjoy.