Whoa... A bit sensitive, aren't we?You ought to be very careful about attacking the work of others. And FYI, those designs are in no way "kitbashed." They actually make plausible sense, and one actually uses NO pre-existing components or design elements whatsoever.What mission does this vessel serve? Generally speaking, a "shuttlecarrier" would only really be useful in a purely military roll (and even most TOS-era shuttlecarrier designs we've seen - fan-made, mind you - are multi-roll ships with cargo facilities, weapons, large crew quartering areas, etc.
My personal favorites are this one...
http://www.shipschematics.net/startrek/images/federation/shuttlecarrier_archangel.jpg
http://www.kitsune.addr.com/SF-Conversions/Rifts-Trek-Ships/Federation_USS_Archangel.htm
And this one...
http://www.shipschematics.net/startrek/images/federation/shuttlecarrier_ariel.jpg
(I'd just as soon "link" those as images, but TrekBBS frowns on "hotlinking" so you'll have to click 'em yourself, I'm afraid...)
UGH... The 'carrier' designs you linked to are IMO the worst examples of kitbashing, or adding stuff to an existing design that just breaks down the balance.
The OP at least came up with a fresh idea, which I think is worth expanding on.

As for the Ariel... No prior design elements used?
http://trekmovie.com/images/tmpentmcq.jpg
(the Ralph McQuarrie Enterprise concept - Yes, I know there are differences, but they aren't major)
It is a better design than the Archangel, but I've never liked that concept. (due to component size balance, and that the engineering section shape is a taaad to much SW inspired)
The Archangel, on the other hand, is built upon the idea that much of Starfleet at the time was being built using mass-produced framing elements and subsystems and so forth. Yet it makes excellent sense, both internally and externally.
But it loses all balance... It's the same thing as extending the engineering hull of the TOS enterprise backwards and adding a bunch of shuttle bays sticking out at angles. Practical? Perhaps. An elegant and balanced Star Trek design? Not so much. A good fan design should look like it obeys the rules (implied or otherwise) of the universe it is intended for. I could rebrand a B5/SW/BSG ship as a Trek ship, and it might be practical, but it wouldn't look like it belonged in Star Trek.
Oh please. Opinions differ. All posts on an internet forum are inherently 'IMO' branded.You personally don't like them. That's cool. But I think that they're both very well-balanced, very well-thought-out, and look good to boot. And by making your comment in the way you did, you're also insulting my sense of taste, of logic and design... you're insulting ME, even though I didn't design these myself, because I said I liked them.