This game needs more defensive skillshots
The main reason tanks and supports tend to feel braindead is because half their abilities are either point and click or button press stat enhancers.
Examples of interactive defensive abilities:
W
Q, W, E, R
Q
W (point and click but still satisfying)
Examples of less interactive defensive abilities:
E
W, E
W, R
R
W
W, R
Obviously not every defensive champion needs to have a crazy high skill ceiling but I think in general they get the short end of the stick for no reason.