This is crucial, especially for high caliber performances with a lot of difficult moves (and in the case of a weapons routine, difficult releases). When a competitor is enjoying what they are doing they are more confident and because they are confident, they look more relaxed. If you have fun when you are doing certain movements then when you perform you will also look like you are enjoying it.
Don't conform to the norm! Instead, try to come up with original ideas that you have fun training.
I mean, in theory it makes sense if something is working, why change it? Unfortunately, this is a common trap that competitors tend to fall into that doesn't help the sport prosper into its full potential. As competitors train and put their new forms together, a common mistake made is to copy the trend of what is winning.