I understand that overload is very cheap, and the Major Slayer uptime from (War machine / master architect ) could be 200%.
But It clearly says Ultimate and yet it doesn't proc the Major Slayer buff after activating the skill or when the ultimate is fully used.
Here are some cheap ultimates that also procs Major slayer :
Templars (75 ultimates, radial sweeps), nightblades (70 ultimates, death stroke), wardens (75 ultimates feral guardian)
Overload got big time nerfed (rip the third bar , rip the damage...) and here we have sets that do not even consider as an ultimate the storm calling skill line ultimate... it doesn't make sense.
Overload needs to be reworked.