Freezer conversion question

Im starting to gather my parts to put mine together. I am going with a collar design, and want some type of top cover also. But in my head I cant find a reason to re-attach the lid. The only obvious answer if efficiency of the cooler and perhaps condensation. Is there something else I am missing? My plan is to hinge the collar and build my bartop right on to the collar. I'll use a couple inches of insulation under the bartop and I have a leftover piece of thin plastic (like a shower wall covering) that will go in to cover the foam and minimize the chance of condensation messing up my bartop from below.

Anything glaring that I am overlooking?

Mike in Duluth

Sounds good to me.....I'm not sure on this re-using the lid deal..........

I'm working on mine and I planned on putting lid back on the collar.
You bring up a good question........I"m not sure what the answer is.

Nothing special about the lid, it's just an insulated slab with an air-tight gasket.