Quoted:
After posting over the past couple of days and researching micro rigs, I have found that I either can't find exactly what I want, or what I do want seems to be out of stock. So, I believe I'm going to build my own micro kit. What can you guys suggest for a good platform base? It needs to be small but sturdy and have the ability to use an H-harness to attach Velcro ID tapes to.  I'm sure there are many out there, I'm just trying to narrow down the thin flimsy options out there.

Molle and Velcro combo is fine. It would be nice if I could find one with kangaroo pouches capable of holding 3-4 AR mags