Ohhh, I didn't think about the system for collecting and placing blocks being different... can you at least use both hands simultaneously?
I suppose it makes it much more like the real thing - though I imagine manipulating the blocks is harder than real life... though in real life I always enjoyed the harder and bigger sets so maybe I'm biased in that way! :D - I got a maximum of one set a year around New Years and was done in a day - I spent a lot more time redesigning the sets I had than I did following the instructions so maybe that's why I don't mind fixing up these ones with missing blocks! :P - definitely some ingenuity needed but sometimes I just have to call the set undoable (about half a dozen so far) or else have a gap (I try to keep them small or inconspicuous!) If it means removing more one one block due to something being missing then that's not good news for its chances :/
Anyway, having said that, there are two more new space themed ones I just added today, plus some updates and fixes (nothing major); I reckon they are medium sized (some two hundred or so bricks) - one is from Classic Space (late 70s) and one a special from Legoland (early 70s), probably the earliest space set made and only just after the first moon landings so not so surprising! :D - still waiting for them to return after the end of the Apollo programme... bet they didn't expect it would take this long after the first bunch *sigh* Anyway, test moon space station is going into orbit and the rest is well on its way to readiness so... *fingers crossed* we might even see some set designs be more accurate than we might imagine! :D ;)