This is a serious question. The most obvious answer, doors, is out. Any door placed on ground level, will immediately get targeted and shredded by the physic group think zombies. It does not matter how strong the door is.
Ladders. You cannot use ladders, zombies will group think and immediately climb any ladder.
You can't use hatches because zombies will group think and immediately break into any hatch.
Before, we could use a simple 2 block jump to get into our bases, it was a little silly, but wasn't completely immersion breaking.
Sure, we can still jump into toothie design bases, but if you don't create some alternate maze/cheese/mouse zombie pathing shenanigans, the zombies will chew through the toothie, and use internal ladder.
The fact is, if you want to get into your base safely, you have to nerd pole, meticulously manipulate zombie pathing using maze/cheese so they do not target your entrance, use half block shenanigans or other ridiculous means. So I ask again, how do you want us to get into our bases? Is this your intended game design??
The fact is, right now, we currently only have two base meta's. Standing on a tall structure with spikes around you, or manipulating zombie pathing perfectly and with those meta's there is no standard way to get into your base. Gazz, one of the fun pimp stuff proudly posted his base. It's a cool base, but is this how we're expected to get into our bases?
https://i.imgur.com/m5WAlP1.jpg
Clarification on this issue would be fantastic.