1) Bingo. Maybe it is time the head coach goes as well. There is a problem in Baltimore and apparently the people running the ship don't know exactly how to fix it. The same problems exist every season. But to answer your question what does it say?
It says that Trestman doesn't run an offense as close to Kubiak as you thought. Marty wasn't brought in to be an OC anyway, so you're not really firing him, you're just not extending his 'interim" tag. Pees has been around for years and while his defenses ranked no worse than 12th save for the injury plagued season of 2015, they have a recurring problem. So to me it shows me that a Head Coach is more interested in trying to win than saving his back side, which...if he does win, he does the latter by default. You keep your job by winning.
There is some talent on this team and the issue is using it correctly. This team worked best when it had two speed blazers in Torrey Smith and Jacoby Jones running deep and made defenses worry about both of those guys burning them deep and a power run scheme while a healthy Pitta worked underneath with Boldin because the top was taken off the defense by Jones and Smith. Now we run this stupid WC defense where teams just run a zone and all of our wideouts are all bunched up together 10 yards or less down the field. Instead of pounding the rock with our one-cut backs we try to send them on these weird sweeps and forever to develop counter plays. Cut the cutie pie stuff and just slam the ball. That actually was how this running game got its success. Running between Yanda and Stanley on the left and between Ducasse and Wagner on the right. West and Dixon would then break a tackle or two. Go figure.
#2 is spot on. No playmakers/stars. No playoffs. Every team in the playoffs has stars and/or playmakers. Even Houston has Hopkins and Miller.