I am going to be keeping my rabbits outside (kind of). I would love to free roam indoors, and I will still promote that, but I can't for a few reasons. 1, I'm allergic to rabbits and timothy hay. 2, my parents don't want an indoor rabbit. 3, I already have two dogs inside, not that they aren't rabbit friendly but it would be too much for my allergies.
So, I came up with a design to provide them with everything they would have free roaming indoors. It'll look something like this but cuter
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There will be a 10x10 foot indoor room with AC and tons of toys, teepees, tunnels, hay, etc.
Kinda like this
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And a 10x10 foot predator proof run with a roof, which they will have access to during the day.
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I'm going to adopt an already bonded pair so they can keep each other company while I am not around. But I'll probably be spending most of my time with them in there.
That checks off all the problems (predators, overheating, boredom, limited space, lack of enrichment).
Obviously not everyone can do this. It's expensive and a lot of work to build. Free roaming indoors is a much much cheaper option. But this is just an idea for what you can do for rabbit enclosures.
But for people looking to get a rabbit, if you cannot provide all their needs and give them the best life possible then a rabbit is probably not the best choice for you.
At the end of the day, what matters most is the rabbits well being. Not how convenient it is for you to keep them in a small hutch or cage.