The line has remained unchanged since its opening in 1985 and contains two of the least-used stations in the system. Since the late 2000s, the municipal government of Toronto has been debating competing plans to revitalize and expand the line, to convert its right-of-way for use by modern light rail vehicles, or to close the line and extend Line 2 Bloor–Danforth farther into Scarborough along a different route. In 2013, Toronto City Council decided on a 3-station extension of Line 2 to replace Line 3 along a different route. In 2016, in order to free up funds for another transit project, the city reduced the extension to include only one station, and complete the extension by 2026. In 2019, Progressive Conservative premier Doug Ford reinstated the 3-station Scarborough subway extension and committed to completing it by 2030 with all construction costs to be borne by the province. In February 2021, the TTC recommended the closure of Line 3 in 2023 and its replacement by bus service until the completion of the Line 2 extension.