also: よいせんをいく
expression, godan verb (iku/yuku class)
be on the right track; go well
Used when someone's idea, approach, or progress is heading in a good direction; often implies near-success or promising quality.
See also: いい線行く (いいせんいく)
君の考え方はいい線を行っていると思うよ。
I think your way of thinking is on the right track.
このデザイン、なかなかいい線を行ってるね。
This design is going pretty well, isn't it?