I haven't read every page of this thread, but I would like to chime in, if I may. I started at go-live, and didn't even know of the game before that. So I know I am no super early alpha backer, but i'd still like to give my opinions.
Personally, I felt that trading was totally broken before. Early on, I used a trade calculator a couple of times to try and earn some easier money... but after a couple nights doing it, I started to feel like I was kind of exploiting and ruining my own experience. I decided to stop doing it. Since then, I have made all my money by other means. I have an "A" decked out viper, and about 5 million in the bank. (Pretty modest, I would say at this point) it just didn't feel right running routes posted up on some website.. i WANTED (and still do want), to do my OWN routes, even after some hard work, and make a relatively decent profit.
So last night, after taking a long time off from trading altogether, I decide that I want to take an honest self stab at finding my own trading. (even if it ends up being some route I could have looked up in 5 minutes on some website) I decide to fly my viper around to all kinds of stations around where I am, examine in detail all the export/import guides in the galaxy map for the higher ticket items, flew to a dozen systems, and a dozen or more stations, and have a few pages of notepad papers filled out with a pen, all the numbers I found in commodities. And after all my hard work, I couldn't really find anything more than 300ish or 400ish per ton, one way. It just got to be TOO much with a pen and a paper, and flying EVERYwhere trying to establish my very own reasonably profitable trade route. I would find one place selling a metal with high supply... travel to a few stations where it was supposed to be exported to.. only to find that place buying for less money, or not at all. Sometimes I would find a place buying with a supposed "demand" for the item.. but for the same price, maybe 1, 2,3 or 400 more credits. meh.
After 3 hours of this.. I gave up and went to bed. I can't develop my own honest trade routes and keep my sanity with how the game is currently designed. There NEEDS to be in-game tools to track and record prices of the stations you visit, and then have a way to cross reference them later. You know... a "super advanced year 3301 technology", I will give the ficticious name of "spreadsheet", or maybe "Access Database"... doesn't seem to much to ask considering it's the year 3301 and we can travel 100x the speed of light. Taking screen shots of trade screens, using pen and paper, or typing them all out on a separate computer... is just... . It just seems totally silly.
So for the last couple nights out of a little frustration, I have gone back to doing the only thing I can to make money on my own without looking up some online calculator or something (i don't follow any of that stuff, I really just play the game.. no reddit, no calculators, etc).. and that is find the resource extraction area in my vicinity that is spawning the best pirate ships (usually cobras). In an hour I can kill enough cobras to make about 150-180k... usually I run out of ammo and have to go back to the station, where i then feel like logging out.
I DON'T want an easy game by any stretch... I love having to fend and figure stuff out on my own.. but something isn't working here. I saw a screenshot of a guy in an Anaconda, with a BILLION credits in the bank, and he is an elite trader. Are you telling me this guy found, on his own, some magical route while naturally playing the game? I just don't think so. I feel sorry for the guy that his entire existence in ED so far, has been looking up some posted "Best" trade route on some website somewhere, for some station pair somewhere the universe... and did 1000 trips for WEEKS on end, just to get the biggest ship and the elite trader status. Now where does he go?
My point? trading actually sucks. Even for you guys that loved your gifted/care-bear shared trade routes. As awesome as it is to make 2200/t per trip... that SUCKS! I'd much rather it be reasonable to find my own routes, and make considerably less. 1500 round trip? 1200 round trip? So maybe this fix will be good, albeit a little painful. Once we get in-game tools to track prices. AND... don't be so eager for end game stuff, you might find it totally rewarding to do it all on your own. You will find a good route, and keep it to yourself

. I will get my Anaconda a year from now, or two, and it will feel even better having reached it strictly in-game.
my $.03.
(p.s. or maybe I am just missing some fundamental piece of the game in regards to trading? I can't find crap on my own)