It just seems to me, compared to the wizard mind you, that the Arcane casters are going to have all the fun, but the Divine casters are the ones having very few offensive or defensive options that don't require them to choose every spell very carefully.
Ahh just wait. Spiritual Weapon is a damn good non concentration spell, and it hits hard and with magic force, so few resistances. And as a divine caster you always have all your spells to chose from, every long rest, so they are way more flexible. And while concentration needs some balancing there are spells like spirit guardians, that really are heavy heavy hitters.
Clerics can be a LOT in 5e and are not merely healbots.
Regarding Shadowheart: her ability layout is pretty bad, and most people think the Devs need to fix that.