Don't blame writers for a dearth of originality. They're busy writing, developing, and pitching the most creative, engaging stories they can... but they don't get to decide whether those stories get made.
Joke/sketch packets should ALWAYS be up-to-date with your best topical material… nothing feels more stale than jokes about last year's news.
TBS is taking advantage of the market for shorter narratives by producing a new kind of television – the microseries. These short TV shows are sponsored by advertisers and air between the commercial breaks of other popular shows on the network. Case in point: Gillian in Georgia.