While suggested Empowered Spell is powerful, do not forget that it just puts total damage done to around average.
For example, average damage of Burning Hands is 3d6 = 10.5, with my suggested Empower spell worst possible roll with 3 bad is 9 (3/3/3) and best with only 1 bad roll is 15 (3/6/6), putting it only slighly higher. While Charisma mod can be increased to +5 at higher levels, many spells deal d8, d10 and even d12 damage, diminishing its effect. As a result, I do not think it is too powerful to be kept even with cost of 1 Sorcery point.
About Wild Magic Bloodline - can be a decent addition as well.
