Extremely awesome. I follow Robots in Disguise and More than Meets the Eye.
In both cases, the war has ended. In MTMTE, a bunch of Autobots (plus Cyclonus, plus Tailgate, a pre-war bot who missed the war) lead by Rodimus/Hot Shot go out on a quest to find the legendary founders of cybertronian society. The writer is really fun, he does great dialog.
In RID, Autobots, Decepticons, and returning Neutrals (various bots who fled the war and went into hiding) try and form a post-war society. Starscream and his politics play a large role (and you will be shocked how often you root for him), Prowl does dirty work behind the scenes to keep things under control, Bumblebee leads the coalition government, and there's a lot of stuff going on.
I love 'em both.
There's also Regenesis, which I haven't read, but it's a direct followup to the old Marvel series by the same writer, Simon Furman.
(Also licensed, Archie's Megaman and Sonic the Hedgehog/Sonic Universe are both pretty fun! They have good action and solid continuing stories nowadays)
It's the first two issues, there's always drop without exception because stores know more people buy #1s to sample it. It really means nothing in terms of judging where it'll stabilize. They're still doing really well.
As for man of steel and trinity war, they're events, but they aren't line-wide mega events, so the sales effect isn't in the same league as Marvel Now or Nu52 were.
IDWs Gi joe has been really good. They made some major changes and now cobra feels like a threating terrorist organization. Its gotten a little slow since most of the focus has been on snakeeyes but its still very good.
Two volumes of each are out in trade (up to issue 8-9). The singles are up to issue 13.
Good. Long story short, Galvatron (non-Megatron related ancient cybertronian) did some stuff, stuff happened, the Decepticons on Cybertron were knocked out by it allowing their capture, and the planet got a jump-start and sent a signal across the galaxy saying "War's over!".
The chaos event wasn't on the level of the later stuff, or even some of the earlier stuff of the same comic.
It's not painful or anything, but IDW transformers is best when it's about transformers dealing with transformers, not cosmic-y big events.