Burning Talons: make it have a synergy with Flame Lash, make it apply Off Balance, and make Empowered Flame Lash extend its duration with every whip by about 2 seconds.
Magma Fist: make it last 10 seconds. Seven is just annoying, it’s your spammable, so you’re always pressing it. It could be 60 seconds and it’s not going to change how it’s used. It does good damage, so you want to be pressing it anyway.
Molten Whip in PvE could get a buff. Flame Lash is absolutely perfect, such a good skill. Mag DK has more cleave and more damage, so either make level 3 Molten Whip do AoE damage or give it more single-target damage somehow. Mag can’t have more single-target damage and more cleave.
How about giving Chains some synergy with Engulfing Dragon Fire? It could be a cool playstyle.