the front burner tube has very little flame but thats because you have a couple of large holes spread instead of a finer and more packed hole placement, and with the log placement and how the flame goes through the logs, they blacken easy and make those beautiful logs ugly over time and after a couple of burns or at long periods of burn, over all id give them 5 out of 10 as most of the problems you have are easy fixes and adjustments, the 5 is mostly for how the logs look but the burn pan is on the cheap side with simple fixes this can be changed, still better than lows or home depo log sets. And are you using sand or what for the center burn tube? Do you use any thing, if not add sand so the flames will seep through the sand and spread the flames out better. This will help with your logs blackening from the flames hitting the logs directly. I dont think you are using sand or anything for that matter from the sound of the gas pushing through how it is, at this point its more of a log lighter than a burn tube.
yes, I hate when gas log pans have so much flame coming out in front of the log sets. The flame on real logs does not come out the front and under the "rack" like that. The front burner should have way more, but smaller holes to create more of a glowing embers effect than actual flames.