Thanks Frontier / Sandro for looking again at this.
I voted for delayed transfer for a few reasons;
Even massive delay, is a clear improvement on what we have now, but instant transfer needs too much explaining. If ship arrives instantly, 3D printing works as a clever explanation but for me a bit too intellectual and disconnected as, even discounting game exploitation possibles, instant transfer ends the idea of any ship being 'your' ship say, with famous 'kills' under it's belt. My Imperial Eagle has assisted kills on Anaconda and Corvettes in CZ's .. it's 3D printed recreation though? (not so much).
Main test for me though, is if you'd never seen ED before and you're offered ship transfer that takes 20 minutes etc., you just think to yourself, "of course, yes." You get it, with no explanation needed. Can go on to imagine, either an NPC courier pilot bringing the ship or a "shipping companies," opening possibilities of rogue companies (stealing modules off you! no wonder they were so cheap!?). So for me, this not only keeps, but grows the scientific integrity of ED's universe as well as being a really welcome feature.
Cheers!