Ejection seats for six passengers?
An expanded Gemini, huh?
Six passengers, two crew in very crowded and dangerous conditions?
If the Titan booster failed within a minute after liftoff, the six passengers, and maybe two crew, too, would most likely have ended-up perishing since I can't see such an enlarged Gemini being equipped with ejection-seats for all eight passengers & crew during a failed ride.
Still!...The Gemini spacecraft had much unfulfilled potential, and not just for LEO orbit, too.
Jacob