I'm not sure if I want to buy this now or wait for all the 3 games to hit this year and binge them all in a row.
At release, people in Japan used to think CS3 was the end of the story arc. Then they got to the end, realized that Falcom managed to end it in a cliffhanger more spiteful than the one at the end of CS1 and promptly got out their Kondo-shaped voodoo dolls en masse again.
So yeah, can binge CS1 and CS2, as long as you're confident in your ability not to get burned out. CS2 doesn't end on a cliffhanger. CS3 does.