There were a ton of technical risks to be considered when changing the design. This was a plug-in device that contained water that was held by children.
I worked closely with the engineering team to make sure the new industrial design did not fight the technical constraints, but rather helped solve or improve some some, such as water placement and air flow by a more efficient positioning of critical components such as fan and water reservoir.
To be honest, the design team was stuck in somewhat of a loop as we went round and round trying to tackle all the issues simultaneously.
Management even brought in an outside industrial design "expert" from Germany who was to save the day. That effort bombed with the client.
I sketched my head off and built quite a few prototypes during this stage.