there are good and bad sides of this whole episodic thing.
Good:
1.you don' t have to wait 5 years for a sequel - you' re playing games of said series with 3-6 month breaks
2.Your feedback after first episode makes another one a better game and this goes on with next episodes
3.you can check one 20$ episode and if you don' t like it, you don' t have to shell out aditional 40 bucks for 2 more.
4.For PC another nice feature is bringing new visual treats in each episode (as time goes by and technology evolves)
Bad:
1.The story ends and you' re left wanting more - the soap opera syndrome
2.20$ for 4-6 h of gaming?
3.
what happens when there isnt anymore money to develop on but only half the episodes done
4.you end up paying <number of episodes> x 20$ = a lot, for the full experience - and you can have great gaming experience for 50$ (with full story and fully featured)