Hello,
The developers usually want approval by the subcommittee or the board before creating a new language subdomain. The language subcommittee has developed the language proposal policy http://meta.wikimedia.org/wiki/WM:LPP to provide a clear step-by-step policy on getting approval, but the Wikisource creation policy is not equivalent.
Unfortunately, this means that most or all requests on the multilingual Wikisource do not fit the requirements and will need to be re-opened under the language proposal policy, in particular regarding the use of arguments rather than simple votes.
Fortunately, the existence of an active test project (whether on the incubator or the multilingual Wikisource) will mean that the request can be fast-tracked if there are insufficient arguments against in the new request. Requests for more projects in a language already established in another project can be fast-tracked even further.
I apologize for the delay and inconvenience; once the new process is fully settled in there should be much less hassle.
Yours cordially, Jesse Martin (Pathoschild)