1 thing not covered in the video is debuff extension. Debuff like Pela's ult def down with 2 turn duration is counted by enemies turn so when you use it on the main enemy turn(elite/boss), it will last 1 turn more.
About the normal buff extension. A good way to explain why it works is that the game looks at "start turn" and "end turn" to reduce the "buff duration" countdown. If the char receives a buff AFTER they started the turn then game will only register the "end turn" part, so the buff will last until that char next turn which then will register both parts. Your content is pretty good and condensed in a small amount of time. I also like when you show what you said in a sorted table like the er rope for some characters video Keep the good work!
I always just used Tingyun's ult off rip since I didn't wanna lose the energy i would've got with her skill, but after watching this vid i should be saving her ult for my DPS turn
theres a situtation where you can do that immediately, dance dance dance at higher superimpositions have a more relevant advance forward than the small spd buff from hackerspace so you can activate her ult immediately on battle start instead of waiting.
You also want to use your dps ult when its their turn if your Tingyun is E1, she give 1 turn 20% speed buff so combined with hacker space its 32% speed.
Just like the creator mentioned, Tingyun with S5 Dance Dance Dance is an exception. I have her with DDD S5 and Hackerspace and my opener is usually this: she has enough speed to be first, skills onto dps which is enough for her ult, immediately ults and moves Sparkle up so she's next in line and then Sparkle skills on dps to move them up next in-line. I found this was one of the best setups, courtesy of another RU-vidr. :)
Thanks for making this video. I really need to master those hidden skill since I plan to keep using Hypercarry Sushang in MOC and I don't want to get meta units like Acheron. Struggling to get that 3 star Vs the new aventurine boss. 😢
a lot of these kinda dont apply to sushang since shes so spd efficient and eats through buffs anyway, but if you really want to use her im sure she works!