I think the only reason Wyrd and Privateer Press did the card packs was to actually update the cards from version to version. I don't ever see FFG following this model.
Although it is worth mentioning that Wild West Exodus used to have a card order for their model cards but have since nixed that and moved to a purely digital (and free IIRC) download of the model cards because they were constantly tweaking them. But that was probably because it would be ultimately cheaper for them since they wouldn't have to keep reprinting cards with updated rules/stats.
Ultimately, I think the way things are now is fine. They don't sell individual LCG cards so if there is 1 card in a pack that you want for your deck, you still have to buy the entire pack. Same principle.