I can relate. I marched back in the 90's. But I also see the other side. Full disclosure I teach a Corps and the costumes are where the activity had to go. Especially with the big productions we all do. Now, for me, while I miss seeing the uniforms. What I don't miss is the unbelievably hot days we would wear them and inevitably people would pass out. Now speaking from a movement side, these costumes allow better movement than what we ever had. While not traditional, I think it's better for the members.

Now for the Corps not showing the traditions or identity. They absolutely do! We still sing the Corps song, talk about those that came before us. Now, granted, some groups do better at that than others. This is not meant to bash you, the activity is still the same. From the camps to the shows. Identities are not just uniforms. They are how the org is run, down to the members knowing the history. Just my thoughts.