Lets say the all the actors that play a role in the Marvel Cinematic Universe (MCU) are unavailable for some reason. This forum thread is the roundtable where the casting directors (all of you) have to recast the whole MCU (movies & TV series). Not for a reboot, but for the sake of keeping the MCU alive for Marvel and Disney.
Don't just propose actors, counter other proposals with better options. Check likeness, acting chops, chemestry, etc.
Ready, set... Discuss!
(Oh and this is for the characters that have already appeared, not new characters you wish they made movies of.)