Honestly depends. If you do like the idea and plot I would say just write it, even if from the beginning from a different POV. Alot of people do that. Alot of writers reboot thier entire series and start all over after thier 1st drafts, kinda what developmental editors are for. To help writers understand if thier entire plot even works so that they can rewrite it to make sense. I would recommend joining proffesional writing groups to ask about their process. cus alot of them have started their drafts from the very beginning or re frame their pov or even entire concept. I did that, so have many others
But if you dont want to,nothings forcing you.