That makes sense to keep it lower. Maybe just flip one side angle? That would keep your spacing for the table and cot but still allow some more width for the slide out, but like you mentioned it will raise it all up still. Are you talking about the bump for the latch? I found the large radii in the bottom corners of the hatch surround to be the most in the way. Also do you plan on taking the floor/lid out to make use of the compartment down there?
If I understand you, both bumps you describe are annoying me in different ways. The wider I go I get into the large radii, the further forward (toward me standing facing the cargo area) I get into that little bump. The cutout I show in the latest photos clears both now, if I flip flop them it might still, I was a bit generous with my milling so I had a little breathing room, I can also move them rearward a bit possibly. I'm going to look and see before I decide. If you look at the first post photos, you see where I was trying to get away from them with an angled cut, but it wasn't nearly enough.
You are correct, the existing plastic floor panel will be removed before I install my new sliding platform. When the sliding platform is pulled out of the truck the entire under floor area will be exposed behind it. Actually the whole idea would be kinda wasteful if not for that little feature. Might be a bit of a reach, but a lot easier to access than emptying the cargo area. I actually would not store anything under there before, with the new setup I'll put infrequently used items under there.
The sliders lock in and lock out, so when I open the rear hatch the platform is locked and won't come sliding out at me unless I push down on both tabs. They are also rated to hold a 500lb load, so I'm hoping it's overkill for my use and should be comfortable with all my gear.
If I'm on level ground, I can pull it out to me and lock it so my stuff is closer and I have a table area under my rear hatch overhang. Most of my camp cooking supplies live there anyway, and if I calculated correctly, there is room for my cooler now as well on the platform. Before putting stuff in there made it hard to access, but when the cargo area comes out to you, my thought is it will be much easier to access stuff, and I can get away with putting some items toward the back without them being trapped.
Or that's the plan anyway.