The SE communities already include Buddhism, Hinduism, Christianity, Islam and there is even a Biblical Hermeneutics community. Anyone posting theological questions can consult those communities.
Also, philosophy.SE already has a "philosophy of religion" tag.
Simply put, theology (i.e. study of deity) has not one iota of relevance to philosophy (i.e. love of wisdom, read: respect for obtaining knowledge) except as "philosophy" is misnomer for "a way of looking at things" or weltanschauung:
Theology is the field of study and analysis that treats of God and of God's attributes and relations to the universe; the study of divine things or religious truth; divinity.
...furthermore, "religious truth" is oxymoron.
If you simply disagree with my assessment of the case regarding theology, deity or "religious truth" please cite one single example of a knowledge claim confirmed or advanced by theology; one single example of religious truth which is not oxymoron; or, one single instance of deity which is not merely weltanschauung or bad poetry.