The MOLLE is an okay system. They were just testing them out when I left the reserves and I wasn't too overly impressed with them.
If you're concerned about straps/ruggedness/durability of such items as field gear and you don't have a commercial sewing machine, call around to your local Drop Zone and see if they have a rigger and machine available. They'll be able to reinforce potential weak points in the sewing, change the straps out for heavier ones, or add more padding. Ahhh... The old Deuce gear before belt pads were introduced! I had a good friend of mine that was a rigger and he worked to customize a lot of my gear. The only thing is to have a second set for inspections...
But always try to play with the gear before you actually have to use it. Adjust it to yourself, find out how every works, fit your gear into, pack and repack (this is nice when you have your own system of packing gear so you can find you stuff at night... Like those dry socks that seem to find their way to the very bottom of a mountain ruck.). Work it out, maybe do a couple short jaunts with it (I've taken back rucks to REI after a weekend because they just didn't fit right), just find out what is comfortable...
Ooops! Did I post this in the wrong spot? Oh, MOLLE gear... Talk to your local Marine grunts...
Nothing's more entertaining than watching an unsecured ruck hit the deck from a goodly distance. You know... And it always happens on the first day of a 30 day exercise!