Dancing Hoskuld
Deity
2. Please obsolete at least some ancient, classical and medieval units and buildings and wonders like the Forbidden Palace by the beginning of the modern era. The city building interface gets rather messy when you have triremes and slingers inbetween your nuclear bombs and airports. (Maybe they could be replaced by a single cheap and quick militia or conscript unit?) Also conduct a general clean up of all the world wonders, they are brilliant, but there are so many of them.
Last time I looked you could not obsolete a unit. You can only have it upgrade to another unit. When you have the ability to build all the units that upgrade another unit the older unit does not show up. If you can build Caravels then triremes wont show.
There is an AND option in the BUG option screens to only show units/buildings you can build and another to only build non replaced buildings. I use the former but not the latter.