If you were to stitch them down in the back about 6 to 8 inches, I think that would be better.
Some of the newer kilt styles leave the pleats free all the way up. I personally prefer the look and feel of the stiched down back. This would be an absolute must for me in a kilt purchase...even if it costs a bit more. Not just for looks but for the support it provides.And it does look great....why dispense with that?

Blu