TBH I'm not sure whether this is worth adding at this point of development, maybe another dev could write his opinion, otherwise I'm rejecting this.
I agree with Omar, this should be optimised
This one should be take in mind for 1.9 release.
Hi,
Thank you for your report. We have pushed this issue to our Github repository for further analysis where you can track our commits and progress with fixing this bug. Discussions regarding this bug may also take place there too.
Follow this link to visit the issue on Github:
https://github.com/mybb/mybb/issues/3431
Thanks for contributing to MyBB!
Regards,
The MyBB Group
Regarding using {$attachment['thumbnail']} in templates as suggested above, this could lead users to guess the full image path and ultimately getting access to download it.