I've thought carefully before deciding to sincerely chime in and respond to this thread. If this discussion can serve to stop people from acting irresponsibly on the track, I will make the effort to discuss. So here are my thoughts...
Draggin, your desire to sample a racing environment is understandable and at times i guess we all want to just unleash on the track, with abandon. However, you have to understand the reason that NESBA is run the way that it is. It is not meant to be a "racing" experience, but serve as a safe environment to sharpen skills.
Being in I group, you have to showcase that you are not only fast enough, but in control, to get the bump to A. If you cannot perform techniques at slow speed, how do you expect to do them at full speed? You said that you can work on some skills, so why not take the time to work on them. Just grab a CR and make sure you are doing everything correctly. Who knows, maybe you are doing some things wrong that you think you are doing right. There are things that you cannot see that others can pick up. (Sidenote: CR's are also human and may make a mistake every once in a while. Remember that these guys have families, jobs, and lives, and they dedicate time from their lives to help YOU. Take a moment and have a little respect.)
For the A bump you have to consistently show that despite what another rider is doing, you can get around them safely. The key word is safely, NOT quickly or aggressively. Remember, a trackday is not a race, but a place to showcase your technique SAFELY. I did not examine your lines, but if the majority of people are telling you that something is wrong, you are most likely wrong. Take the time and try out the lines people are showing you. At least give it a chance. Maybe the perfect line for your bike is somewhere in between. Every bike has a slightly different ideal line. It also depends on your riding style and the way the bike is setup.
Another situation where rider control comes in handy is when you have to stray off the traditional line in order to pass somebody. If you truly have control and are quick enough, you can pass somebody on the outside [required in I group] without even thinking about it. If you have to think, DO NOT DO IT, it is too late. So I am stressing to learn to control the bike. You have to learn it at a slow speed and REPEAT REPEAT REPEAT, until it becomes muscle memory. The speed will come, do not rush it. You seem a bit impatient and too sure of yourself to get that A bump. Patience is key my friend. Without patience you will end up on your head one of these days, and you might take someone down with you.
Another point I would like to bring up is that you are not the only one on the track. Other people paid to sharpen their skills and they may not be as skilled or fearless as you. Everyone is at a different skill level, everyone is different, so you have to ride with margin for error and in a respectful manner when coming up on others.
Here is a funny story, just to give perspective on why it is not a good idea to pass on the inside OR pass without a wave by [actions forbidden in B and I group for good reason]. I was riding with an ORG and a rider passed me up the inside with only inches between us. Luckily my bike was upright but I was not prepared for this at all and I just grabbed the brake as soon as he whizzed by me (in a panic). Imagine if I was leaned over and he did that pass. If I panicked and grabbed the brake while leaned over I would lowside right away. NOT GOOD. Situations like this is what NESBA wants to avoid. Take other riders into consideration.
Also, it is very easy to get caught up in the "I MUST ACHIEVE A GROUP" mindset. Who cares what group you are in? Honestly. At the end of the day it is about you enjoying yourself and learning a little bit more. Eventually you will get to A. Do not worry about that. I admit I had that mindset before but you have to snap yourself out of it. Why are you riding, for a rank? Take a step back and reassess. Don't endanger other people's lives and your own for a sticker. If you take the time to learn and enjoy what you are doing, the journey will be sweeter. I promise.
To sum up everything, NESBA wants everyone to excel at riding and go home happy and unharmed. In order to do this NESBA can't be run as a race org, plain and simple. If you want to get your kicks free of rules, its very simple. Go racing. But please try to keep trackdays as safe as possible by heeding this info.