Yeh, temperature and humidity... sometimes I can leave a tin open for a few days and it dries out. Sometimes if a blend is too dry, I can leave it open and it gets too wet. A log would be rather useless for me in my area of the world.
if it sounds like fun go for it. If not why bother. I mean drying out isn't complicated you just drink enough to avoid the d.t.s and oh wait sorry.... Drying tobacco isn't complicated and involves lots of variables. I think there is a reason everyone is saying just touch the tobacco.
Keeping a log seems like a lot of work for something that's supposed to be a relaxing pastime. I get why you'd do it, but at the same time, maybe we don't need to make burning leaves in a wooden vessel more complicated.
That said, if you think it is something that will make your life better and help you enjoy your time smoking a pipe more, go for it.
Get it out of the tin/pouch/jar...... cut....rub....spread fold...whatever.....leave. Grind coffee beans prepare aropress.....make coffee pour into cup with lid......fill pipe......done..........(....walk to shed!)
That's probably why I'm relighting my C&D Redburn a dozen times per bowl.
Seriously though.........I really like Redburn....but it's a pain to light it and keep it going. If I dry it a little more I find it loses that flavour that I like.......