Rationale
Why did I do things the way I did them? I mean, besides the fact that I am an unhappy person who really needs to do things my way? Well...
I like the idea of lots of possibilities in career selection, but I didn't want to do TNE. I especially didn't want to abandon the random chargen of CT/MT. So, I took the CT/MT skill table layout and played with the skills.
I added the "métier"s for three reasons: 1) I couldn't fit all the careers into 12 slots, 2) so many of the careers fit neatly into "archetypes", and 3) I wanted to be able to have "Commandos" and such.
Then, I lined up all the rolls (which I haven't posted yet) for college and such to the same table spots. (I also added specialties to College, rather than have a bunch of different options.)
On the skills, I tried to line up the cascades to general pursuits. I hated the idea of learning one skill for an Auto Pistol, and having to learn a different skill for Body Pistol, when they are essentially the same weapon. I admit I have a lot of cascades, but it looked necessary.
Lastly, I added the Mundane and Esoteric skills to keep from having blank spots for some of the careers. You know that you aren't learning nearly as much (Traveller-wise) if you're sitting behind a desk, rather than humping a ruck or piloting spacecraft or walking a beat. So, I added the Mundane skill for all the everyday things that clutter up your head (like how to run a Xerox machine or how to get to your son's friend's house to pick him up) and Esoteric for all the things that are only relevant to you, your job, etc. (like the exact specs for the communications equipment you designed or some single piece of equipment you use and doesn't get used anywhere else in the 'verse).