I don't trust CTRTransfer enough to not lose tickets. I see CTRTransfer like a universal SysNAND restore. In fact, I myself have once lost tickets using it. It should be viewed and treated as a region changing and firmware recovery tool with caveats to look out for. As for dropping a mention that it'll keep tickets, good luck telling someone that when their tickets are not kept. Eh...
tikSweep sucks at its purpose. Use FBI to delete unused tickets.
Your mentioning of reconfiguring the router to make TIKdevil work does pique my interest.

However, I consider this approach very messy in ticket restoration for the lay person who isn't technical enough to setup their router.
Also, TIKdevil will miss restoring tickets for games released after the CDN server block, custom Virtual Console injections, and *.3ds rom cart rips converted to *.cia files.
Oh yah, there are two (2) other *.db files to look out for found at:
- sdmc:/Nintendo 3DS/<ID0>/<ID1>/dbs/
If you tamper with these or they become corrupt when using the:
- System Settings → Data Management → ... → Delete
, all your titles will disappears in HOME Menu.
Because of that, I suggest deleting titles only with FBI because of the number of times other users reported this happening to them.
No tool such as that exists as far as I could search for. Maybe some day if somehow decides to rework developing TIKdevil. :/
Tell me about it. For the time being, I annoyingly tell everyone I've come across to backup their game saves + extdata, dump their games into *.cia, and keep safe a copy of their SysNAND *.bin image. Basically, try to avoid finding themselves in the scenario having to jump through hoops to get their stuff working again. Preventative measures, folks!
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Oh btw, your previous suggestion from this
post about using pasteboard.co didn't work out for me. There was a day I tried dragging and dropping images, and the site didn't accept them. It works perfectly fine now, so it was probably during one of their down times.
I researched imgbb.com, and they're no longer blocked by malwarebytes. They were at one point due to hosting malware masquerading as *.png images, but this was due to users bypassing the image format check the site didn't have before.
Here is VirusTotal recent report of imgbb: