Point taken. However....
Plastic drain pan (which also works as receptacle and transportation vessel)=between 5 and 10 bucks.
More of a cost/benefit comparison for me. I think by me spending $50 on a Topsider vs. a cheap plastic drain pan, the point of diminishing return will have been greatly surpassed.
As far as the excess fluids...if you don't put too much in it in the first place, you won't have any excess will ya?