First let me say [welcome] to FOG, Then let me say what a great first post this is a great idea and it will be copied by many for sure, myself being one of them. Thank You for this design
Tommy welcome to the FOG and I thank you for your first contribution. I have experimented with various systainer inserts and have never come up with something that really works for me. Your design looks looks better than anything I have built so far.
Very nice design and execution. As others have said I would like to see it with all the tools loaded. I really like the drawers and your drawer "rails" are very creative.