When the "Assault Rifle Ban" was signed into law but not yet started, I bought an unissued SKS for 69 bucks. I liked it so much within a few years I bought 2 more. I added a scope mount on one of them and it works awesomely well. Better accuracy than ME, and 100%b reliable.
I also have a Garand, an Eddystone and a couple 1903s. Sure the Springfield is a finer gun, but an Enfield and an SKS also have a place in anyone's collection.
I guess I don't understand the "placeholder" term. If the "collection" is ultimately going to be one gun, then go buy what you want in the first place. Springfield 03s are selling readily on Gunbroker for about $1200. They will never be any cheaper.