Agreed. I'd pay a couple bucks more a month for twice the selection. I'm a film nut and love a lot of old titles that aren't available. My Disc queue is way more interesting than my streaming queue
I wonder if the reason they don't have a lot of the older films is due to the fact that digital rights were never fleshed out? If so, I'd be curious to know if that's the type of thing that can be resolved (and how).
That's always been my suspicion, and it's probably worse the further in time and space you move from Hollywood. So, beyond the most famous examples, older foreign movies will probably never appear.