I watched a few episodes a while back along side some of my friends, Wasn't really my or any one of us' thing. It's the same issue as when I tried watching Sailor Moon where I think I'm just too old to get into it now. 70 epsiodes also seemed quite daunting for a monster of the week format.
Plenty to like about it though. Sakura and Tomoyo are cute as fuck and the artstyle in general is solid. Sakura just wearing different costumes out of her Richie Rich friend's collection instead of a single de facto magical outfit is something I found I didn't appreciate nearly enough when I was watching. It's such a good spin on the formula and it's done in such a subtle way. Sakura's father was also wonderfully aloof. The sports festival early on really exemplified it.
In terms of retro magical girl shows Princess Tutu was more my kind of thing. I only watched half of it because school got in the way but I'd like to finish it sometime.