IF the androids were added, I would add 4 androids. 18, 17, 16, and 19(or dr. gero).
18 and 17's abilities:
Melee, ki ball, yellow beam (as a bit extra power)
They will also not run out of energy, but the problem with them is that they cant transform nor go faster than any ssj.
16's abilities:
The only diffrence between 16 and the rest is the fact that he has a bit more strength, but is slower. He also has a explosion attack that will only work if mutiple people are near him (cause he gets -1 kills when he suscides). The amount of damage doen is equal to 3 times his current life. His suscide can only be done if he has less than 50 life. All head blows are reduced (only a little bit, not too much) for 16 (caue his neural chip is stored in his main body)
19's abilities (the big clown droid, or use dr. gero):
His energy isnt infinate. He is verry powerfull and has lots of ki, but he can not powerup. The only way for him to get energy is to absorb it by defending aginst a beam attack (shouldnt be hard theres plent of beam n0bs). He can also recharge his ki by standing still and doing noting (to make it easer, he recharges ki 2.5 times as fast as the other characters)
Remember: all droids CANNONT transform (Exept cell) mainly cause of the abilities that they carry.
Also, if the team can do it. Give cell his tail so he can absorb droids. Rule about absorbing dorids for cell:
Must be either 17 or 18. Cell gets 1/4 of the droids avaible ki, power level, and life.
Must be done in melee combat. Must be done after a STRONG kick or punch is landed and cell does a 5 button combo. The first 2 attacks dont matter, cause they will land no matter what. The next 3 must be blocked. (the reason why I say the 2 attacks dont matter is cause it shows the enemy droid that cell is going to absorb him/her)