OK...Saint's Row virgin here. While I understand that story isn't really the main focus here, I'm wondering:
Is it worthwhile to play one or both of the earlier games to be familiar with the characters and backstory? Will I miss out on in-jokes?
I'm getting to the age where time constraints mean more content isn't always a good thing, so if the story elements are unimportant, I'd rather just skip to 3. But if they are important...
I impulse purchased the Saint's Row 1/2 two-pack(both games packaged together) alongside SR3 last week. Mostly out of curiosity given how cheap it was(and SR3 was already on sale), but not expecting to really play much of them before diving into the Third.
Surprisingly, I am quite enjoying SR1 and am about to wrap up the story. I'll likely move onto SR2 right after before even opening part 3. I'm not certain how SR3 links the plotline, but SR1 and 2 at least continue the story. It's paper thin though, I'm close to finishing SR1 and have played the first couple missions of SR2, but the personalities are done well enough that I am glad to have met Johnny Gat, Troy, and other staple characters from the beginning that I know will emerge in SR3.
Also I find the evolution of the gameplay, engine, and mission design really fascinating. It's more of a personal curiosity, and SR1 is by no means a 'must play'. It apes the PS2 GTA games very heavily with only a few original ideas(albeit mostly gameplay convenience upgrades, and the arguable quality of the side missions), yet the acting is really well done and I am actually more curious about how each plot strand turns out than pretty much ANY of the story threads in the earlier GTA games(I really dug GTAIV). But ultimately mission design is almost identical to GTA3, to the point that nostalgia has played a bit of a role in my enjoyment.
SR1 is definitely dated and is far from a necessary play on its own though, but almost everything in its foundation still seems to carry through(and improved) in the sequels, which is really interesting. SR2 is a massive overhaul regarding the core game design of missions, activities, and world design, and seems like a better starting point...but again I'm not even certain the plot in SR3 is as woven as close as SR1>SR2 seems to be. So you may as well just start with SR3.