With all do respect, i have to say Glass shelves detract from the models. I prefer White shelving myself, but i DO understand it is preferance. Those that were displayed were all very well done and kudos for your efforts....but when models are all seen at once it takes your eye away from each well done model by itself. As far as Hanging>>>>>>>I use fine fly line leader...it is strong...virtually invisible and not too expensive. I go fly-fishing so it is in my bag....but go to a fly shop or sportsmans shop and ask for 6X fly line tippet. Oh....and it does not collect dust.
Position one around the prop...or props(two-half-knots) and one around the tail. Hanging models isnt a pity either...its totally normal to display an aircraft model doing what it is famous for....FLYING. Not parked on shelf.
And im not biased because mine are all on shelves too. however i do take my lesser models(airfix,italerei,heller, et al) and hang them to depict certain scenes