Mastery Suggestions Wanted

This is my current mastery setup and a mix of champions I use often. I was currently going to max Deep Wounds + Assassin and 3/5 MD. However, I was thinking of doing the route below. Should I stick with maxing DW and Assassin or go different? Open to other suggestions as well.
I don't do arenas competatively but do AQ/AW and looking to start Act 5 content. I've read Will Power can be useless since hits do so much but I do like to heal block damage off guys that have non-damaging debuffs like Capt, which is why I'm considering getting it. Also, I've read mixed reviews that Assassin doesn't need to be maxed.
5/5 Deep Wounds + 2/5 Assassin
2/5 MD
4/4 Perfect Block + 1/5 Stand Your Ground + 1/3 Will Power
Main team:
4* SW Duped
4* WS Duped
5* Killmonger
4* Taskmaster
4* Wolverine Duped
Alts:
4* Venom
4* GR
4* Corvus
4* Ultron Duped
4* DS Duped



I don't do arenas competatively but do AQ/AW and looking to start Act 5 content. I've read Will Power can be useless since hits do so much but I do like to heal block damage off guys that have non-damaging debuffs like Capt, which is why I'm considering getting it. Also, I've read mixed reviews that Assassin doesn't need to be maxed.
5/5 Deep Wounds + 2/5 Assassin
2/5 MD
4/4 Perfect Block + 1/5 Stand Your Ground + 1/3 Will Power
Main team:
4* SW Duped
4* WS Duped
5* Killmonger
4* Taskmaster
4* Wolverine Duped
Alts:
4* Venom
4* GR
4* Corvus
4* Ultron Duped
4* DS Duped



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