Hmmmm

Why bother? This reminds me lining the drip pans in the electric stove
with foil, vinyl slipcovers - etc.

Also, I think there is something to be said for leaving it be.... have
you noticed that food cooked in a grimy, often used grill (provided the
cooking surface is clean) tastes better than food cooked in a brand new
one? The grill has to be seasoned.

I like to keep stuff looking new as well, but when it comes to the
iniside of a BBQ.... nah.