I was not satisfied. If there is something you should know about me, it's that I am a huge Alien franchise nerd, as well as Predator, but that's irrelevant. For me Alien Covenant was predictable. I knew from the beginning David had been fiddling around with Chemical A0-3959X.91–15, aka black goo, and figured he was trying to create the xenomorph, or perfect specimen. The split second they showed the courtyard or temple full of figures, I had a feeling David did something to them. The goo didn't come to mind first just because of how in the beginning of Prometheus the Engineer disintegrated. I can't say that I actually predicted everything, but certain things like him taming the creatures and killing what's her face from Prometheus did not come as a surprise.
In regards to the creature, it is not officially the xenomorph from the original four movies. The facehugger may be achieved, but the organism erupted through the guy's mouth rather than the chest. And the fully grown creature does not look like the original xenomorph.
Along with everything else, there needs to be at least one or two more movies before everything leads up to Alien. As a nerd, I could put an end to this better than Scott and his pathetic screenwriters. I would make David take the Covenant back to LV223 and perfect the xenomorph in the meantime, and discover more Engineers and their ships that weren't known about in Prometheus. He gains their trust, he builds a thingamajigger and sends a message to Weyland Yutani about his research and accomplishments. Yada yada. He tricks one into looking at an egg, you know what happens next. Like all victims, the Engineer suffers from amnesia about what happened and feels fine. David convinces the Engineers to go to Earth with a ship load of eggs. The runner-up being the infected one pilots the ship and just after leaving LV223, the chestburster begins to emerge, the Engineer loses control and crash lands onto Acheron, aka LV426, which just so happens to be the neighboring moon to LV223; they're both moons that orbit the same planet. Yada something else happens on LV223 that destroys David, whoever else is alive, yada yada. The end.
I have another way of how the ship ends up on LV426 that would involve the Colonial Marines, but I don't feel like explaining it all. The inspiration for that version has to do with a secret in the game Aliens: Colonial Marines. When you're inside the derelict ship, if you shoot the Engineer in the head, a hologram of a dog fight appears that involves the derelict ship and another ship, but the unidentified one doesn't actually look like a military ship.