Not now but there is a chat rework waiting to get implemented .. but it needs more work now since that is kinda old now and needs more work on it to make it work with 5.5. Not sure when it will be implemented but it would resolve this since all commands are moved to a plugin instead of being in the compiled server code
There is not mod yet to save a building to put it back later, but as you said you hade to wipe the whole server,
Since you lost the whole server save file, why not make use of the back-up system that is build in the eco server.
By default the eco server setings make a back-up every 30minits and keeps 5 back-ups you can adjust it to more or less save intervalts and more or less back-ups kept depending on your diskspace availible, if the host is not always 100% reliable, Copy the last back-up to another location online or on your local pc.
If you dont know how it works here is a short explanation/example.
Default server map structure: \EcoServer_v0.5.4-alpha\Storage\Backup
Copy the last newest file in backup to another save location, local or online, (example file name : 02-22-2017-12.37.40.eco)
To restore your server from the back-up file. Copy the back-up file to,
And rename the file to: Game.eco
Your server save file is restored, even after wiping a server just make sure to have a back-up file stored and keep it up to date.