1. add a "all" checkbox for Structure Type in search form.
(I made a sample)
Because I wanted to search some architectures except highrises sometime, I thought this will be convenient for me.
2. show architectures besides highrises in map.
Recently, I wanted to check whether some masts or chimneys have been added to the database. If they can be shown in map, it would be more helpful.
Maybe those architectures can be shown in other colors instead of gray, that can be distinguished from highrises.
3. adjust the information table of diagram
3-1. add native name
3-2. add additional names with "title attribute"
3-3. If architects of this building are two or more, others will be shown in "title attribute"
(I made a sample)
Just suggestion (ゝ∀・)