Well on a sea based carrier I`d agree with you about the runway but seeing as this is a space based carrier and I`m having trouble justifying having a runway at all (in fact pretty much my entire justification is "The Orion had one and it looked cool") so I think I shouldn`t really make it any bigger
hehe yea im a big fan of sea based carriers so im kinda partial in that respect. Again its an awesome design though, however like you said it really is hard to justify a runway in space anyhow.
That gives the idea for a nifty dropship like carrier like babylon 5 does. Just drops the fighters through tiny holes in the bottom of the ship

If only I had the skill (and the program) to pull something like that off.
Enough analyzing, good work keep 'em comin!