If I am not mistaken, ISB pushed for Andrew Robinson as Garak to become a series regular, first at the beginning of season 4, last at the beginning of season 7. From what I can tell, Behr was fond of Robinson and a bit protective of Garak, but his attempts to elevate Garak were thwarted by various budget priorities (most notably hiring Dorn). Even so, Garak ended up being one of the most regular recurring characters, sometime being indistinguishable from the regular actors (and outperforming one or two of them), and fit into the "crew" on many occasions.
That said, how does Garak fit into the series as a regular character? What role would he play in the episodes he did not appear in? Would his actions be changed in the episodes Garak did appear in?
Being a recurring character allowed the writers to act a little more treacherously than would be otherwise possible. In Broken Link, Garak is used to remind us how merciless the Dominion could be, but it leads to his attempt to kill the entire race, an attempted act of genocide that received a surprisingly light sentence. The scene allowed for some contrast to be made between him and Worf and to show how Worf had become more disciplined. As a regular, the extended absence would have been problematic, and the light sentence in the story would have becoming a constant nit to pick for Trek fans. "A little genocide in the name of self-defense" would probable become something else.
That said, how does Garak fit into the series as a regular character? What role would he play in the episodes he did not appear in? Would his actions be changed in the episodes Garak did appear in?
Being a recurring character allowed the writers to act a little more treacherously than would be otherwise possible. In Broken Link, Garak is used to remind us how merciless the Dominion could be, but it leads to his attempt to kill the entire race, an attempted act of genocide that received a surprisingly light sentence. The scene allowed for some contrast to be made between him and Worf and to show how Worf had become more disciplined. As a regular, the extended absence would have been problematic, and the light sentence in the story would have becoming a constant nit to pick for Trek fans. "A little genocide in the name of self-defense" would probable become something else.