Hi Jayne
You probably could find "ile" rhymes that better fitted formal stress expectations. But only if you really wanted to. I had a quick play and came up with this
And, worse, you’re not allowed to smile.
Passport pics are always vile,
…but they have to last for years!
How dare you say I’m juvenile!
Why not make rules more versatile?
My thoughts may fall upon deaf ears
but listen to the rank and file!
Let photos show us with some style
It doesn’t need to end in tears.
FWIW
Joe