An Irish Language Act for Northern Ireland is a big issue that the Nationalist and Unionist parties in Northern Ireland disagree on.
Unionists fear that by agreeing to an Irish Language Act the result will be an increase in Irish being spoken in the public sector and in the courts and that that will therby dilute British culture.
I have a suggestion. Why don't the Irish language umbrealla group Pobal and the Nationalist parties and the Alliance Party drop the requirement that Irish should be allowed in the courts and instead give local councils the power to name new residential developments in Irish?
In practice new developments would be named in Irish in nationalist areas and perhaps sometimes in mixed areas. Unionists would not lose anything as they would be able to veto the use of Irish names in their areas and I expect that nationalist politicans would be sensible enough not to try to compel them to use Irish names.
A large number of residential developments are named in Irish today in most of the Republic. They aren't very popular in Dublin but they are in most of the Republic.
Agreeing to this idea would result in the growth of a distinctly Irish physcial environment within nationalist areas in the North but would ensure that one symbolic issue would be off the table.