Vincent D’Onofrio’s performance as Fisk in Season 1 wasn’t just a major part of what made that season great, but he also immediately shot up to the top of the class as far as live-action Marvel villains work in general.
Getting him, Tom Hiddleston’s Loki and David Tennant’s Kilgrave in the same room would be Marvel’s greatest achievement.
Sometimes all that’s needed is just the promise of a character’s return, and although this is cagey, it’s pretty positive and the lack of information provided doesn’t seem so bad.