I agree with the "bugs you" part.... and it'll drive you mad if you let it.
This slope is so gradual - that you'll never notice it... and if you're doing something that is critical that measurements be taken off the floor - it's easy to allow or adjust.
In the 8 years I've had my shop - I've only done one project that I used the floor to pull a tape from. My floor is flat like my first girlfriend.
However... I FULLY understand the dilemma! I fired the "crew" that was hired to put up my "kit" building - because I couldn't stand their fitment work. Even tough this hack stuff was going to be covered I still couldn't stand it. I would have known it was there and it would have driven me crazy.
I still don't think the slope is one of those things that if you forget about - will come back to you and say "dang! I should have spent X to fix that".
Although -- I replaced my lift because I couldn't stand it -- but that is something I use CONSTANTLY.... and I won't buy cheap or offshore tools because again - I use them and it bugs me. But the floor? I grind on it - I drag stuff across it because it's too heavy to lift - I hammer on it... it's just a big azz anvil - it gets dirty and I vacuum up the mess and that's it. It's just there to be used.
