In an open letter to the music mogul, Kitty revealed her ideas to win viewers back.
The singer from last year's series began: "This year something has gone badly wrong, and I want to offer my thoughts on what could be done to restore fans faith in the shows."
Kitty claimed that bosses should ditch the theme weeks and "boring" song choices, and suggested that this year's wild card twist had backfired.
She wrote: "Chris Maloney's return has generated him loads of public support - at the expense of greats singers, like Ella Henderosn."
Kitty also told Simon to return and take charge, begging him to ditch the back stories of the contestants and focus on the music.
And Kitty suggested that this year's judging line up were too nice and boring.
She said: "I miss you, Simon. And while I love all of this year's judges - especially Nicole Scherzinger and Louis Walsh - they're not criticisng the acts - or each other - enough, which makes for boring viewing."
What would you do to boost the X Factor ratings? Share your views in the comments below...
The X Factor 2012 continues this weekend on ITV1 and ITV1HD with the final four acts singing songs that they hope will get them into the final.
On Sunday's results show, one more act get the axe and there will be performances from Pink and Tulisa.