It depends. An animated one could be great. A live-action one starring 70-year-old Liam Neeson as 40-something Qui-Gon would be bizarre and hard to watch.
Uh, yeah! I love Qui-Gon, and he desperately needs more content. Imagine an TBB animation style animated series with both him training under Dooku and training Obi-Wan. I'd watch that for sure!
They’d have to do some kind of de-aging with makeup or cgi and it wouldn’t look right. Orrrrr the series could star force ghost Qui Gon. In which case the co-stars are likely Obi-Wan, the camel, and some Jawas. Yeah, okay, I’m sold on this series.