Need mythic tracking in delves

I wondered why tiers 9 through 11 didn’t reward extra ilvl in the vault or bountiful delves. I was disappointed to find out that we can’t get any access to the myth track in delves even if we do the harder tiers… why even do anything beyond tier 8 if there are no extra ilvl for the extra time/effort? Even hero track armor is somewhat rare in delves if you don’t have maps or can’t get them…

I much prefer solo play against the whole m+/raid scene so I would love to have the change. I don’t like the mentality of “You can only get the better armor if you are with other people”.