We haven’t even cleared the 2015–2016 TV season yet, but behind-the-scenes players in Hollywood are already hard at work on crafting a new round of shows to try to catch the increasingly divided attention of TV audiences this fall. Six top network-TV casting agents revealed to The Hollywood Reporter just how much the rapidly changing TV landscape has affected their ability to find actors willing to commit to long 22-episode seasons, and which former sitcom and Mad Men star was the most in-demand this season.

Despite acknowledging a push for diversity and “color-blind” casting, four of the six casting directors interviewed by The Hollywood Reporter said they put offers out to Community alum Alison Brie for both network comedy and drama series. “I gave four or five offers to Alison Brie,” one woman said. Just behind Brie in popularity was Craig Robinson, who is a free agent after his NBC sitcom Mr. Robinson was cancelled last year. “Everybody wants a funny guy, and [Robinson] was offered everything,” one casting director explained.

But following a trend among in-demand actors, neither Brie nor Robinson opted to return to network TV. Robinson will have a recurring role on the buzzy USA show Mr. Robot this year while Brie took a role on Julian Fellowes’s Downton Abbey follow-up: the three-episode mini-series Doctor Thorne for ITV.

Like many streaming or cable shows, neither Robot nor Thorne will require much of a time commitment for Brie or Robinson. That desirable freedom to do other projects, network casting directors say, is making it hard for 22-episode series to compete. “People ask for shorter episode orders and fewer years than a standard seven-year contract. We’ve been trying to hold strong,” one director noted. “A lot of actors don’t want to do 22 [episodes] anymore; they want to do cable shows. That’s a problem,” another agreed.

But it’s not just the duration of a broadcast network season that is turning actors off. With TV audiences increasingly fractured and divided by too many viewing options, network TV can no longer offer actors a decent shot at being part of the mono-culture. With the exception of Shondaland, the networks aren’t as much of a brand booster as they used to be. Instead, actors are eager to work with the film auteurs dabbling in prestige cable or the hipper, buzzier content found on streaming platforms. “If I hear one more time that so-and-so has a straight-to-series offer for a Netflix show, I'm going to shoot myself,” one casting director moaned. No surprise, network’s most-desired actress, Alison Brie, has a recurring voice role on Netflix’s Bojack Horseman.