Any non-GPL mod is a license violation

[alas]

Since every module uses GPL'ed module skeleton and parts of GPL'ed dotproject application it must be GPL'ed also. So using your own modules or customizations violates GPL license.

Is it going to be changed in near future?

[ajdonnison]

No, it isn't going to change, and you are not entirely correct. Provided the module can stand alone it can be licensed under a different license. Just using the dP API doesn't enforce the GPL provisions for derived works, otherwise every Linux application would need to be GPL.