Decor penalty for lack of variety, Decor increase for Symmetric rooms

[Alfons100]

Decor is a mechanic that goes up and down, plus from pretty things, down for ugly things. Range and Decor efficiency are the only two factors for it. Sadly, this leads to some monotone cheese designs to cram as much decor as you want in one area at the moment, neglecting the unique ways of decor increase, like shinebug ranching.

Thats why I suggest that if more than 2 to 6 of the same Decor source in the same radius, it will suffer a Decor penalty, from -10%, up to -60%, so overdoing it will sometimes do more harm than good. Quite punishing I know. But this would make that good decor rooms would need more variety of all the good Decor sources, like Shinebugs, the new different Statues/Paintings and the new Pedestal trophies. Instead of just cramming as many painting as you can in the smallest area possible. 

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Another mechanic to raise the decor is to have rooms, and the buildings inside be symmetric. If the room walls is symmetric in a Horizontal fashion, it will get an overlay-only Vertical mirror line that draws the line for it, 1 or 2 tiles thick. If you place two buildings that are both in the same spot mirrored through the vertical line, it will get a fine +15% decor bonus and +2 radius. This of course doesn't apply to negative decor sources and the tiles themselves. This of course adds a new way to reach high decor levels with people who plan room layouts well, instead of just cramming decor in one area. Less is more.

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This is the Quality of life update which seemingly has a focus on adding more Decor sources, Decor is sadly a little lopsided mechanic at the moment, this would fit right in with this particular upgrade.

[Sasza22]

I was actually thinking that the same type of decor item shouldn`t stack (or tal least not more than 3-4 of a kind) just so you couldn`t decor overload by spamming same looking statues all over the place. Paintings should prioritize a different one to the exisitng in range so they wouldn`t count as the same one. This way there would be a reason to use multiple different types of decor items instead of spamming one type.

[Lurve]

High decor, high radius items that don't stack would be great.  Luxury environments shouldn't have to look like Donald Trump's bathroom.

[Coolthulhu]

Rather than penalty to the decor items themselves, which would be confusing, incomplete stacking would be much better. Say, divide the bonus from given item by number of items of same category (art+display, plant, tile, clothing) that already affect current tile, sorted by value. So, if you have two square painting masterpieces at +20 decor and two tall painting mistakes at +10, you'd get (100%*20)+(50%*20)+(33%*10)+(25%*10).

Possibly with an upper cap of 4 items in category or something like that. To prevent the "painting corridors" being used to try to overpower the low stacking.