Are you quite a tall person? I am 6'2" and hopping in both my rig with a sparco evo 2 and my kids rig with a more generic seat I have more leg support, i.e. the seat goes out farther towards my knees.
I cant tell by the picture but one other suggestion if you want to try is to actually lower the pedals a little bit and see what that is like but only if lowering them gives you better support under your thighs. Its hard to see from that picture if your legs at the front of the seat are coming up off the seat because of the angle. If they are you are asking more of your tail to take the weight. It can be altered by moving the pedals away or lower. Dont move them away if you are happy with how much bend is in your legs..
It's only a suggestion based on a pic that I cant really tell from so ignore it, you will know if I am wrong
EDIT. actually I think becuse the seat cushion is black I couldnt see it well in photo and it does look pretty good after all! legs look supported.
One thing though... when you have it right you will forget about other people and how well they fit in your rig or not.. Once mine was done and it fit me so well it was easy to tell myself that friends will either fit in it or they wont. If they dont, they cant use it because it's far to comfy to compromise it for someone that may only ever get in it once for 15 mins