>>2280
Not really. You could try giving all your files a local 'nsfw'-like tag and then including '-nsfw' in your searches, but that's a bit awkward and prone to mistakes. For now, if you want to divide your files into multiple file domains, then I recommend you run multiple clients, one for each purpose. I may extend the client to support multiple 'local files' services in the future, but I am still thinking about the best way to do it.
>>2282
Most of the time, you probably want to stay synced with a tag archive. Most use md5 as their file hash, while hydrus uses sha256, so only mappings for local files (where both sha256 and md5 is known) can be cross-referenced and imported to the db. A few tag archives use sha256, so all data is imported in one go, but this is rare.
Either way, staying synced to a tag archive only adds very small lag, usually a handful of milliseconds per file import, so you don't have to worry about performance loss.
I usually leave my main IRL client on my laptop open all the time with about eight tabs for different ongoing purposes. I have it set to run maintenance jobs on idle, so it generally stays synced to the PTR all the time. It stays open through computer sleep/hibernation without problems.
I also have a file-empty admin client that I use to process PTR petitions, that I only have open for a few minutes a day, just to get that job done. I have that set to sync on shutdown, which usually takes ten or fifteen minutes.
Both scenarios work ok for me, but it took some tweaking on file->options->maintenance and processing to get what I wanted.
>>2283
Here is probably best for now, but perhaps there could be a more permanent place. I assume you have read my rough schema at:
http://hydrusnetwork.github.io/hydrus/help/tagging_schema.html
In general, I am easy-going about this stuff. If you start tagging files with good and appropriate 'medium:' namespaces, I figure other people will start using them as well. If your tags are less helpful, they might be revoked or altered with siblings. Remember that most files in hydrus have metadata that allows for 'system:mime is video' and 'system:duration>0'-type searches, so adding things like 'animation' may not be as important as you expect.
Anyway, I don't have a specific place to discuss this, but feel free to create a wiki.