SP was deliberately animated darker this is confirmed in a making of documentary they say the movie had a darker animation to represent a darker side of the kingdom to show that Pride Rock was out of balance this is why you never see a bright shot of Pride Rock until the ending. The darker animation was actually symbolic. The less detailed designs was a result of the decreased budget not the darker shading. What did we see of the pride lands in the original movie I feel you're overreacting in this regard the outlands is an entire kingdom of course it's going to have different areas, the pride lands are an entire kingdom that we have not seen so it's going to look different since they're showing us the parts we haven't seen.
The writing is my issue with the show as far as preschool shows go yeah it definitely is ahead of the curve there but I still find the show lacking any permanent character development since it's not serialized. It's a dilemma for me but I also realize the show isn't for me, which means I should probably stop coming up with ideas I want to see since they don't come with preschoolers in mind, maybe I'll catch on eventually right lol.

Man, people get so worked up over some fans not mindlessly adoring everything Disney produces for this franchise. It's just so funny to me. I think I've been a fan of this franchise for so long that it just bounces off of me.