I feel like this line has reached a point where it appears to have some legs, forgive the pun.
You can really build quite a shelf-full of these. Heck, they have better variety in these than the classic 4" Hasbro/Kenner style Super Articulated figures.
If these had only lasted 1 or 2 series, I think they would have been curiosities, but with the line growing every year it's possible people will see them, like them and want to backfill their collection. That of course is where we come in.
For me, seeing the vintage Stormtrooper released as a 2 in 1 Sandtrooper / Stormtrooper, PLUS the biker scout on speederbike tells me that even though the focus of the line will likely be the current movie in theaters, they are willing to fill in the vintage characters along the way.
We know the Han Solo movie is coming, so you can bet we'll get Han & Chewie & Lando. Han & Lando may not look just like their vintage counterparts, but Chewie will, and apparently Han doesn't stray from his style much. ("Same jacket")
We know Episode 8 and 9 are coming, so that's a ton more figures. Plus whatever spin-off movie # 3 is. We're also hearing rumors of a Boba buildable.
All things considered, I think this line is showing some real potential now that it has critical mass. It's like when the 6" black series was released by Hasbro. At first, many 4" collectors ignored it. Once it became clear it was the new flagship, and had enough momentum to be a nearly complete series of characters, people started to want the figures from the first few series.
In fact, Mixels and really ANY Lego theme have that similar pattern.
I'm calling this line a future (LONG TERM HOLD) success, and I'm excited to be picking them up at 80% off
What say you?