We actually like "basic" champs once in a while (I think) !
EDIT: I think you guys are confusing what I'm saying with easy. there's a difference between basic and easy
I really liked the simplicity of
. Her passive didn't require a PhD to understand, and all of her abilities are fairly straightforward. Q: 5 damage rocks then 1 damage rock W: Move them with rocks E: No dashing over rocks R: Big rock wall.
was also pretty well done in terms of being basic.
Other notably simple champs I love:

Just saying we don't need calculus in all their spells to be a fun champ. Not saying I don't like complex champs
, but its nice to have some refreshingly simple champs where I don't need to watch the spotlight 4 times just to get the basics.
or 
is simple
but not quite as hard as
someone I find truly complex
or
I'm guaranteed to do fine as they're just that easy.
He's really not your average ADC.

P: Rock
Q: tumbling rock
W: More rock
E: Smash rock
R: Boulder
P: go in hard from behind
Q: throw a goat
W: jump to a fool
E: Shield
R: Braum's middlefinger
?

Super simple, heavy CC, really tanky.