Tricky batch stuff...?
The thing is, I'm thinking of starting a forum for all the tricky techniques and methods with batch (it wouldn't be a great instructable as it would require a lot of previous knowledge). So, I'd basically just have an index with all these different segments of how to do tricky stuff (such as advanced techniques for piping and other random stuff).
The only problem is that I don't know what to make it on, so I'm trying to target people who've read all the instructables and are still missing that extra bit of information.
Now, you could say something like "do whatever you think is hard", but the thing is I work better when it's at the request of someone else (basically I like to help people, and I'm abusing that natural urge).
So, if you're experienced in batch but are curious about anything (perhaps how to ignore every rule in the book and put 50 nested for loops within your script), please post it below.
I've started rewriting my batch tutorial, so most of the stuff you comment will go into that... somewhere.