Nothing too major

- A limit to the number of layers, i would say 4 or 5

- The time between each could be set as a minimum of 3 seconds, that would make twirls or seizure sigs an impossibility

- A max file size of 200 kb as not to make loading time unbearable

These are just values out of the top of my head, if comp agreed to this i could come up with something more complete