O_O As always your CGI designs are superb!
Nah, stop it - as said it has been years and I totally not looked into the topic it since then, heck I did not even redo the YellowJacket, yet.
Although I usually spend some time in the concept phase - for example, a plane called Stuka without bent wings is a no-go. I simple wanted to merge some design elements of the Ju87 and Ju187 and some other "Nazi prototypes" - not my fault that they called it Stuka, could have called it Beaufighter - I would have used other stuff
the Shilone - concept is based on a tailless aircraft but the problem might be indeed the transfer from space into atmospher (so it had some kind of telescope wings to move them into the body during re-entry . The LRM20 is supposed to work as kind of bomb-bay instead of a "launcher" - the body should be able for hypersonic speeds.
finally the Leopard concept - it's based on the MWO model, I scaled it accordingly to have 4 MechBays with some room for spare parts, it has 15 single person cabins, each with a kind of shower and zero-g toilet (yes I modeled a Zero-G toilet) some extra space for galley and bridge.
The challenge was the ASFs - I used the wide Chippewa - two Corsairs would not have been an issue. they need to fold wings to fit into the bay - the whole front of the leopard is a vacuum rated bay. The pilots move into the pressurized hangar, then the whole hangar is open to vacuum and the ASFs are pushed out by catapult - before igniting their drives.... you really don't want them to ignite it within your ship....
also, I was thinking about the drives for the leopard - simple because it needs a kind of maneuver drive and of course the transfer drive (the transfer drive - for constant acceleration need to be placed at the "bottom")
ahhh this issue:
another shot: you see the fusion-drive rings of the maneuver drive (and the small exhausts for the transfer drive in the bottom)
OK - thats for now - back to the OP: had some more time to think about it. Some of the conventional fighters are quite well designed. sure the Meteor for example has intakes at the upper side - this cries "hypersonic" speed - but boy the SRM racks below the wing will just rip the fighter into pieces.
The Guradian and Boeing Jump Bomber Raubvogel are delta wings, fine. Planetlifter and Vendetta might work as well. The MechBuster/Seabuster is a cannard fighter and should work as well.
Other look strange but as I started with the "Nazi-prototypes" its seems that every form of aircrat is able to fly as long as you have enough speed.