Okay, let me address these issues you've raised:
1) "secret"= I don't think I've ever really defined measurements for a female character of mine. But, you wanted measurements, though, now she has them. You can probably see she is on the slim side, true to an asian-like build.
2 & 3) I guess you're not a fan of some fun embellishment. :/ I've replaced them with more practical descriptions.
4) True, maybe that was a bit bland of a feature. I've thrown in a little more meat to show she's a total military brat and flaunts her patriotism even off duty. Just imagine that red-blooded flag-waving American...
5) Spoiled in the sense of those Neko's that seem to occupy everyone's attention and get all the good stuff or have a superiority complex, etc. I made a small edit to clarify this to 'Nekovalkyrja drama queens' and 'Neko-supremecists'.
6) Yes, the fact I did actually use the template shows there. Fixed.
On the concept of Mary Sue: That is really not the intent of this character at all to be perfect or flawless. Anyone who knows me knows I really dislike people who play these types! It might not be entirely obvious in the writeup, but the entire flaw of Rin is that she is 100% focused on success to the detriment of all else.. if she actually does fail or lose (and I fully expect and want that to happen), she will take it in the absolute worst way possible. The best way to compare it is she is like that workaholic Japanese businessman who's job is his entire life because the parents raised them that way. Screwing up would make one contemplate ending their life for the shame they have brought to boss/ancestors/self. And by working so hard they usually end up ignoring a wife and having home lives broken, etc etc. Rin is thusly designed to be her own worst enemy. Although I freely admit she does have traces of a 'Tsundere' aspect... and for that I will apologize.
Plot wise I'd like to be assigned to the Senbu if there was a choice (as I think in its environment they really need a serious disciplinarian character), but I also realize starship ops or bridge crew might be in high demand in other places and would not mind an assignment anywhere you feel is justified. She is a careerist after all... any starship is a good starship!