I'd say the buildings can be easily fixed by adding a small base yield (e.g. 2F for gardens, 2E for Mausoleum). That way they are decent replacements on deposits and offer some flexibility without giving up too much. The Paradise Dome is a nice example for an ethic-exclusive building that actually scales decently well with planet size.
As for oversized stuff, it is a bit harder to find an easy solution. The biggest problem is in my eyes that once it's gone it's gone for good.
Maybe something like "X oversized slots while you have this government" would work better. Higher base number, but don't allow that stuff to stack up. In that case you can also crank up the benefits a little bit (e.g. +100%).
As for oversized stuff, it is a bit harder to find an easy solution. The biggest problem is in my eyes that once it's gone it's gone for good.
Maybe something like "X oversized slots while you have this government" would work better. Higher base number, but don't allow that stuff to stack up. In that case you can also crank up the benefits a little bit (e.g. +100%).
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