Because like every other ambitious person, Goa based politicians also wanted a red-light car and titles of minister and chief minister.
In fact a better suggestion would be to merge the entire Gomantak area from Raigarh or Sindhudurg in north to the dubious Mangalore down south famous for its people switching loyalty between Malayalam and Konkani depending on their benefits. That way, MLAs will increase and small scale defections will stop.