I recently published my position about such topic on Standard module maintained by externals
So I doubt we will be able to accept and maintain an account_tr inside the official Tryton module for now.
The extension of UBL may depend because UBL is a standard so normally it should not be country related (except maybe for some kind of identifier). But if it is new format that are only described and required by the Turkish administration, I do not think we could accept and support such module.
About project_research, my concern is that it sounds like a verticalisation with a specific workflow in mind. But official modules must be generic and implement common and flexible workflow. So this will depend on what you put in this module.
And for account_gb I fear we will be in the same situation as for account_de_skr03 and account_es.
In short if you want to submit module to be included as official modules in Tryton, it must solve a general issue/workflow in the most generic way possible.