This is more to do with my Cockatiels, but I think you guys can help me

My tiels are
SO messy

Seriously!! They have a steady supply of pellets and when they bite into the pellet it goes flying in all sorts of directions, all of which accumulates on my floor. Now, I keep a pretty clean ship, but I have to sweep their area at
least 4 times more then Max's or the Conures. So it got me to thinking...
Right now, their food dishes are set in the middle of the cage. Is there any reason why I can't move the dishes lower? I mean, they have NO toys on the bottom portion of their cages (cept foot toys) because...well, I'm not really sure, actually

But looking at the cages, I could put some perches lower and add some toys closer to the bottom and move the food dishes lower. Basically, utilize the entire cage, instead of just the top half (tiels are ground feeders anyways, all my tiels spend a good deal of time on the bottom of their cages).
Now, my reasoning for moving the food dishes lower is because then I could add a homemade skirt-type deal. The cages came with skirting, but they are useless. It has never made one difference for my birds. But if I were to wrap a piece of cloth around the lower part of the cage and put the food dishes just slightly lower than that...would that work? Would it be okay?