Map editor overmap spawning is sluggish and could use a feature

[metalheimer]

Is your feature request related to a problem? Please describe.

This is a two-part issue. First, the overmap building spawn menu is sluggish, as is the cursor on the overmap once a building is selected. Second, it would be immensely helpful if multiples of the same building could be spawned at once or in quick succession. After a building (or overmap special) is spawned, the menu closes. Not only that, it doesn't remember the last spawned building, forcing the user to search it again from the huge list. And not only that, the search function doesn't have search history. This is not fun with the sluggishness.

It would help test building loot spawns if either multiples of the same building could be spawned, or maybe if the loot could be deleted, rerolled and respawned without having to leave the building.

Steps to reproduce:

1. Debug menu - Map Editor - Overmap Editor (I think it was called?)
2. Hit "t" to Spawn terrain
3. Hit " / " to search the huge list for a building. Let's say s_gun, which is the gun store.
4. After hitting Enter a few times, you should now get to choose where to place the gun store. At this point you should notice sluggishness, as well as in the menu.

Game version win64 tiles, less than a week old version, but this has persisted for weeks longer than that. I only tried overmap building spawning for the first time a month ago maybe and it was just as bad then.

Describe the solution you'd like

-Ability to spawn the same building in succession.
-Include search history for the overmap editor, like in crafting menu.
-Optionally ability to delete all items in a building and reroll its loot.

Additional context

No response