Your first point, regarding Asher: I don't think Asher is as innocent as they try to make him. Whatever happened at Trotter Lake likely involved him, and he probably did something unethical that we don't know about. Whatever the D.A. knows about Trotter Lake was forcing Asher to put Annalise in jeopardy, which I honestly was worried about. Asher is not aware of anything that happened with Sam's murder, and for Bonnie to cover up what Wes and the Keating 5 was a good and a bad thing. If Asher knew what really happened, he'd probably still make a statement. Personally, I think Asher killed that girl at Trotter Lake, or he witnessed it, or helped someone do it. Perhaps Tiffany was his ex-girlfriend that he accidentally murdered, so he could have committed manslaughter. But the one thing I do know is that Asher's Trotter Lake storyline is extremely vague, and I hope we find out more about it soon.
Your second point: The Keating 5 never really connected as much until Sam's murder happened. We know that Connor and Michaela are bonding more, but we also know that no one trusts Wes either. I think after Annalise fires them next week, they're probably going to be stuck together because that murder will probably haunt them forever. Asher is so out of the loop... to the point where I think he'll lose his mind and do something he may regret. If Annalise brings the Keating 5 back next season, it may depend on the result. But from what I've seen, I'm uncertain they'll get their jobs back, especially after leaving her in the house like that.
Laurel: Aside from Wes now, Laurel is the sneakiest and strangest one out of the Keating 5. I can personally tolerate Connor and Michaela, because they're the most distraught. Ever since Laurel stole Michaela's engagement ring, I never seemed to trust her character. What she did was a good tactic, but it's still suspicious to me. Her affair with Frank went too far for me. Especially based on that almost explicit, vivid scene of Frank and Laurel having sex. Laurel is doing everything she can to get information out of Frank. She's sneaky.
Frank and Bonnie: I actually love the development we're getting from Frank and Bonnie's characters. The only thing that got me is Annalise's keepsake of Bonnie's father's video. Not only was that disturbing, but it was just really sad for Bonnie. We know that there's more to Bonnie than her killing Rebecca, or her loyalty to Annalise. The fact that Frank and Bonnie are so damn loyal to her is crazy, as if she's protecting them. The only thing I want to know is if Annalise knows that Frank killed Lila. Bonnie knows it well enough.