I liked this quite a bit, with the (big) caveat that the screenplay defiantly refuses to really do anything interesting with the subjects it's flirting with.
But the film frequently looks phenomenal. The action beats are pretty fun. The Nine Inch Nails score hits hard and sets a great tone. The Grid is an evocative environment, and transporting some of those aesthetics into “reality” yields engaging visuals. Sure, that’s all surface stuff... but that’s actually the most important stuff (to me) in a TRON movie, and ARES delivers more than enough of that.
Everyone’s standards will be different, but I feel like I got exactly what I thought I was paying for with this.