Question about combining two different robot styles together

Would it be possible to combine the robot functions of “Highrise” and “Fireball” into one robot legally (not exceeding the size limits), because I noticed that after you finish with the yellow L4 beanbags, there’s nothing you can do, not even place normal beanbags on L1-3 using the Highrise arm, so I thought this would be a cool idea.

I think the question is more can you design it…