Hey Corey! I definitely have love/hate relationship with Wu. He is in my Titan teams but not my raid teams. After extensive testing, the best benefit of this team and my other mono-raid-teams is that they are all Fast Mana.
In fact, this team was inspired by my Meen Green Macheen (I switch out caedmon for Tarlak for titans), which has an absurdly excellent win rate, well over 90% of raids (pre-telluria) and never look at defense lineup when choosing an opponent.
Mono-teams with average and slow heroes have significantly higher risk in raids, as most of the time its a struggle to power up even fast mana before defense has a chance to unload. I am definitely not excited about dumping emblems into Chao and putting him on my offensive line, but he yields the best win rate with this group. Joon is obviously missing from this equation (as is Lianna from my green lineup), as he has eluded me for 3 years of TC20.
It’s just too risky to assume a fight will have enough yellow tiles to trigger wu before the defense can power up most or all their specials. Once he is activated, there are typically no more yellow tiles to yield any damage from, and his special often expires before I can charge the rest of the team up again.
Having all five heros activate at the same time is essentially game over for a defense team. I highly recommend experimenting with fast-mono raid teams!