Some random thoughts...
People complained when the episodes were slow. So they ramp up the action and people still complain.
Some want them constantly on the move...others realize that human nature would want stability and safety of shelter vs always being on the move.
The term Jump the Shark...has Jumped the shark itself.
Building the wall around a big Two+ story church or house was dumb. However that was not a rick or his group decision. That was done by people in the community that clearly have no grasp of what the world was now. They were so into their own utopia and so inept at the danger aspect of what could happen...they started sending people out to recruit others to come in and help them in that area and even then they still fought the change.
If anything was dumb about it...it was Rick and his group not going over to check on the foundation and stability of the structure after a freaking semi-truck crashed into it.
So the idea of it being next to the fence is understandable due to who built it and their lackadaisical take on possible dangers. The stupid part was after it was hit with a truck and not checking it. Repairing it or tearing it down.
But in the end it is a lazy plot whole to make it easier to open the safe area to a massive influx of zombies in a quick time frame.
The gas truck and RPGs...as BZ stated earlier...easy way to distract the zombies...if they ever get back.
Calling for a new landscape and adventure....you know it will happen but to expect differences and complain about it...kind of silly.
Wander around looking for safety in numbers and a safe place to leave instead of continuing to run around. It is what most would do.
If that bores you...time to stop watching because it is going to be the same thing, just different people and different safe places but still essentially the same.
IF you want continued travel, different things, constant action, a little comedy, writers going out on a limb to try different types of zombies or zombie styles, a character that is part zombie and can control them in a limited way and a bunch of cheesy campy stuff where the writers don't take themselves too seriously.....maybe you should start watching Z Nation...completely different than The Walking Dead.