I like that each instrument is a palindrome in itself even before the reversal.
The middle section sounded rather strange IMO because of the short higher bass note feeling like it came in late every time.
Because you had the palindromic patterns I'm not sure it was necessary to reverse the song to fit challenge C honestly. The percussion made it sound very strange because the other instruments remained pretty similar.
I did like the fast arpeggios in the reverse section though I thought they sounded neat!