IDK for 7th, i will answer for 8th
Q) Which army of the imperium do you play? or would play vs this list.
I play AI (SoB) with a knight and Storm Raven
Q) Would you defeat this list on pure brute strength? mission objectives? both?
Its SoB.. its kill 70% the opponent in 3 turns or lose.
Q) Can you win with your most standard list against this? Would you need to tweak your list in order to counter mine?
I dont tweak lists for lists.
Q) What would you find most challenging to deal with in this list, what are you most concerned about?
Wraithknights
Q) Which Imperium list build or units would be of major concern against this list? (i.e. War Convocation, Grav Centurions, etc)
Why Imperial? You waat a challenge fight against Necrons lol, i guess tho BA with 3 Stormravens.... they are fing strong.
Q) If you had to list the "Cons" in my list what would they be? (i.e. No Anti-Air, No Anti-Armor, Lack of Mobility, etc etc)
Lack of firepower, Eldar has some of the most Mass shooting S6/7 that can reliably do damage, your knights will do a lot of damage, but with movement on most vehicles now and how strong vehicles are you will be chasing all game.