Discovery is only fun if you're totally and completely blind.
The first time I played Minecraft, I was in the dark. First time playing terraria, I was in the dark. First time playing with mods, I was in the dark. And I had fun every time figuring things out on my own.
Azanor is trying desperately to make it so that the more knowledgeable of us can relive the experience of learning Thaumcraft. Which is terrible, because that brings it way too far for anybody else trying to play TC. If you try to start learning TC for the first time, it's not fun trying to figure things out. He ruins the experience he's trying to give the more knowledgeable players by giving you a magical book that you can summon with a magic wand that tells you everything, and that completely ruins the experience of figuring it out on your own. And if you try to not use the book, you won't figure out the crafting recipes (Yes, discovering crafting recipes is discovery aswell, but it's pretty boring and pointless). NEI is let off the hook a bit, because it functions as the wiki and you can use it only if you want. Also, he failed to give people who haven't played around with TC the experience of learning it, because you randomly throw away your items to 'learn' things. If you figured something out about an item or a block and you wanted to try and make it, the research system jumps up into your face and says "No no no! You need to burn up yo' diamonds dawg before you can do dat!" and bores you for another few hours before you can finally use what you learned.
Also, I'm talking about the research system in TC, not the mod itself. The mod itself is completely fine.
TL;DR: If Azanor wants to 'improve' his research system, the best way to do that is to remove it and instead expand his mod as far as he can items-wise to keep that 'discovery' experience for the people who already know about TC.
Or he could, y'know, completely destroy his mod and all his hard work and remake the research system for the third time. That would be fun too.
I shall be back to rant some more on the 'discovery' aspect of different mods.