A mommy makeover usually just refers to a combined procedure involving a breast procedure and a stomach procedure. It is not a scientifically defined termed by any means - an augmentation with liposuction of the stomach, a breast lift and a tummy tuck, a breast reduction and a mini-tummy tuck, etc. could all be considered "mommy makovers". So yes you could also do liposuction of the arms or thighs at the same time.
I would encourage you to talk with your surgeon about the amount of surgery planned though. As multiple procedure are combined together, it can greatly increase the stress on the body and increase the magnitude of your recovery as well as the potential for complications.
For my own patients, I use the somewhat morbid example of suppose I was in a car accident and broke my arm - I would probably be taken to the hospital, they would cast it and send my home the same day. If 3 months later I was in another accident and broke my other arm, it would be the same outcome - home that same day in a cast. If three months after that I broke a leg in an accident, I would likely be sent home in a cast (hopefully with some additional safety counseling at this point!). However, if I was in a car accident that broke both my arms and both my legs at the same, it would probably result in me ending up in an ICU somewhere as it would overwhelm my body to deal with all of this at the same time.
For this reason, I think it is important to talk with your surgeon about your overall goals and come up with a reasonable treatment plan that always prioritizes your safety. And this must be individualized for each patient based on age and health status. I would consider it much more reasonable to perform multiple simultaneous procedures on a young healthy patient, while on an older patient I would be much more cautious about doing this.