I've always looked at the table as your guideline for how things move forward With TL advancement.
The things I've been wondering about is the Engines. It's noted that they are significantly more advanced than current Imperium standards but thanks to the new sizing of parts... a J2 drive is already smaller than what is listed for the harrier. with 10 Tons for a J2 drive at TL-11 which is the smallest that a Jump Drive can be.
I've asked for a ruling on reducing sizes of advanced drives but it seems to be getting ignored. But tha'ts not the point right now.
This thread resparked my interest in looking into this redesign so I've been toying with it for a bit.
The design does have to change. The fuel tank for one needs to be reduced in size. Since power plants don't need as much fuel in 2nd ed 60 tons is way too much but this is mostly compensated for by the fact that you need to allocate common areas seperately from staterooms now.
The M-Drive and P-Plant are much smaller than the previous edition, and the M-drive gains 4 Advantages from it's increased TL.
Here's my rough Idea of what the 2nd Ed Harrier could look like.
(The stealth Jump Drive is probably a little wishful thinking on my part. Though all you can really do is replace it with more effitient power usage and less fuel again. and the less fuel it's already using is basically being used for the power plant as is.)
If I've forgotten anything or made some stupid mistakes please let me know so I can fix it. I might have rushed past some of the sections.