We should be able to have a way to find out what tier your friend is playing in lockdown. This does not affect blast network. So how this works is that when you put your cursor at your friend playing lockdown, notice that it says "Playing lockdown"? We should have that changed.
So it should say "Playing Lockdown - Tier (#)"
We should add that so there would be less confusion. Even asking them, it would take a long time for a response since they are playing LD
You could look at the Spectate menu.
However, I don't see any harm in this suggestion.