Changes?,
I just wanna made some suggestions to Dylan
A new (old) type of buildings: Castle
Another type of buildings: Complex (For two or more buildings who looks or funcionally works like only one).
A sub-type of building style: Generic
On materials: Two separate list... 1.- for structure 2.- for facades, now they´re not clearly separated and may be interesting know what are steel structures, concrete structures, mixed concrete-steel, other.
Into the primary diagrams & searchs:
Churches, Mosques, and other religious buildings, sometimes they are very significant structures on the cities where their towers are tall, (for me) chuch towers was the original structure compared with nails to create the word Skyscraper.
Towers and monuments on the primary diagram too, we can't think on Canada without CN Tower on the default primary diagram.
The status type "Proposed", out of primary diagram: If they are no currently on the skyline and not always will be there (some projects will be stopped or cancelled); a proposed structure into diagrams sometimes could lie about what will see on a city when we visit it.
I suggest to create a new kind of editors: Co-editors who can introduce database changes but without the complete access ...I mean a kind of alternate database access where the current editors just copy and paste or approve/reject simple changes, not tools to create or delete entries, just updates, not neccesarily a illustrator, may be a lot of participants of the site and could improve the database maintenance.
A wider type of products to maintain alive the site... Cups, T Shirts, USB Memory, keyholders, Cd-holders, etc. with our drawings or site's diagrams printed on.