As for now I've seen only one kobold god and he is Kurtulmak, Any chance we have Gaknulak as well?

There's a couple more, such as Tiamat. I think they are enlisted at the Deity forum of this website.

Yes, but no fitting god for rogues, rangers etc. (Actually - rangers, I'm not sure myself, reading it again)

>_>

Well, then, seems I won't need it at the moment, not as a scripted god, but: http://oracle.wizards.com/scripts/wa.exe?A2=ind0007c&L=realms-l&D=1&P=22780

Here is a link to know about him, if one wishes to.

I can edited it if dms wishes to add to the gods list.