Of course a good uke can make a technique look more spectacular.
I was not one for taking my own flying uke everywhere with me, I would just use whoever was there, I would say " no matter how you breakfall you are going, how you do it is up to you.
In the late 1960s I was on TV with TK Chiba Sensei, he threw me and to my shame I over did the ukemi, Sensei growled in my ear " Mr Ewiss , I can throw you without your help "" never did that again.
Henry Ellis
Positive Aikido
http://aikido-books.blogspot.com/