I'd say that Gokaiger, Shinkenger, and to some degree, ToQger, are generally seen as pretty good. Most people seem to think that Zyuohger, while not doing anything particularly wrong, just wasn't very interesting.

I just don't see anything in Shinken and ToQ, while Gokaiger is just so uninteresting because the characters are so lifeless.
Zyuohger was honestly the only show after Gekiranger that actually managed to be entertaining. It's plot was weak, but I still found myself enjoying it far more than most other series.

Some poeple hate the 80's robots because they're too blocky.

Gokaiger's characters were lifeless? I've heard a few difference criticisms about Gokaiger but that is without a doubt the first time I've heard that one. Care to go into detail as to why you think that is?

The characters had interesting traits, but it never really led to much of interest.
My problem was that, on rewatch, they just felt repetitive. Marvelous's smug ass is charming, don't get me wrong, but it's spread too thin.

Thinking back to the team, I can definitely see where you're coming from. A few members of the team have personalities that I would probably sooner associate with side or one off characters rather then a Sentai team member.

the current sentais have too much CGI.

I would have agreed a couple of years ago, but it seems like since Ninninger, they've been using CGI more sparingly. But some shows I just can't handle the CGI, there's so much.

Yeah but, it looks too much artificial.

Goggle V was popular because of Black's actor Junichi Haruta and Pink's actress Megumi Ookawa.