I feel like his early aggression most of the time has him die in positions that are too hard or just straight up impossible to trade for and that shit has been holding him and his team back severely. We talk about how well coordinated SEN are but Zekken keeps trying to do his own thing trying to be the ideal early impact duelist by hard coinflipping a lot of fights.
This is also interesting because usually teams are played around their duelist when they need aggression, whereas SEN seem to operate just fine saving their util for themselves through some strong calling and individual plays if something like zekken dying alone in showers or him losing the first duel after satcheling down mid happens.
Round 10 of DRX v SEN Bind is the perfect example of this issue even when Zekken is part of the team's direct offense, because even though SEN had the ingredients for an easy site take, Zekken ends up messing it up completely by going for the engage and wasting Raze ult before Sacy's Skye or even TenZ's Yoru can throw out a flash, in which they then piled on for Zellsis as if he was their duelist instead lol. The round that follows right after is also another example of his lack of discipline to even play for info properly. These are very, very fundamental mistakes being made mind you when compared to the best of the best.
This could be a lack off calling on Zekken's side to get the support he needs when he wants it and/or a weakness in JohnQT's calling to incorporate an entire teammate in rounds properly. SEN haven't met a team that can punish this but they eventually will. Zekken adopted this type of playstyle some time ago that's been losing them a lot of rounds for free, but because SEN have been winning, I think they thought it was all good until today gave a glimpse on what would happen if Zekken has a slight off day, 3/16 FK:FD galore.