On topic... not over-nerfed. The runes grant a lot of passive and active abilities. The rune knight is effective.
Off topic... twilight cleric power creep seems exaggerated to me, although that might be because I'm used to playing with protector eldritch cannons already. The THPs get better at higher levels (starting with small better average at 7th level) but still costs that initial action when the cannons are usually already in play due to the longer duration, and the cannons are more versatile. Both took the winds out of the sails for the best benefit of heroism.
Off topic... twilight cleric power creep seems exaggerated to me, although that might be because I'm used to playing with protector eldritch cannons already. The THPs get better at higher levels (starting with small better average at 7th level) but still costs that initial action when the cannons are usually already in play due to the longer duration, and the cannons are more versatile. Both took the winds out of the sails for the best benefit of heroism.