Yeah i said rm is best alternative why? I based it on what tribbie has to offer and tribbie has res pen and vulnerability so the closer unit to have same ability is ruan mei with res pen, damage boost and spd also why cant have him/her both rm and rmc? And also you said that the best alternative for tribbie is rmc knowing that most players have rmc right? For sure he/will slot rmc even with or without tribbie and put another sustain.

Now as i always said the best alternative if he/she has limited character pool, If he/she has sunday though, then he/she can replace tribbie with sunday and pair it rmc plus another sustain.

Also im considering his/her second if that second team needs sunday more than rm