I feel your pain 😭

yeah since he will hardly be attacking it's not crucial to have imaginary boost as the main stat for your orb. if he needs to be beefed up you can throw an hp of def orb on as long as the substats go toward crit dmg or speed!

also yukong's lc is a good substitute but gl if you're going for his signature

I have been trying to build him like bronya. It depends on the average speed of your other units, but I've been trying to shoot for 150 speed so he can take two turns before the enemy. crit damage is good, I think 185% is minimum cause that scales to giving a 55% crit buff.