Staging has a huuuge impact on scoring in the color guard caption. The performer is rarely responsible for a majority of the number that gets written down. I've taught a few groups in the bottom 15 of DCI and that's usually most of our comments. We can write appropriate work, clean it, have the kids hit their dots and perform it, but it doesn't matter if the drill is bad. I'm sure this changes as you get into higher scoring groups and they look at the differences between quality, book, etc, but in my experience over the past decade, those are the majority of the comments a judge will offer. I also think this is what can put BD ahead even though they get a sail or have hula hoops.
As far as tossing goes, as long as it's musical and the performers are trained, then go for it! At the lower levels of WGI (mostly A) it's becoming "too much tossing" because that's what the sheets ask for - achievement of skills shown clearly. You have to hit them over the head with the fact that you can throw a 5 before you can move on to nuanced movements. In IW and what I've seen so far this summer, it's mostly appropriate. It's enjoyable. There are still groups that have a dance statement, that close a song with a powerful flag feature, with interesting drill when there are 3 equipment sections on the field interacting with the corps. All is not lost! Let Crown toss multiple 7s, let Cadets flourish and do fast features better than anyone else, let BD high kick and throw a perfect sabre ripple, and let Blue Stars have the absolutely hardest book of any group on the field. If we're talking demand being on the sheets, they would be top 5 every year.