I completely agree about con...and completely disagree about THM. For THHM the only change regarding these spells i'd do is lowering MP cost of sacrifice.

...and maybe changing paradigm shift to a "Forces your next spell to become AoE".

about cure, i'd just make MP cost and enmity being based on number of affected targets...but other than this i'd leave it just like it was before 1.18...even the MP cost.