maxxing out your shoulder charge provides immense damage value and makes you that much more lethal when you get it off
siphon life isn't a very good ability right now, so i hold off on buying it beyond the cooldown reduction until i have everything else properly done (especially considering it no longer goes through walls)
abrams gets free unstoppable when he maxxes his ult, which guarentees a free rejuvenator secure as long as you don't get parried and then forget to follow up the melee again
i hope you all get as much enjoyment from this build as i do <3