If you're thinking of selling them perhaps call them minnow fishing accounts and get the full angler set on them. Since the possible gp/hr is much higher.
Could be that they see wintertodt as goldfarming. Stuff like void/questing or training methods that don't make money or don't bring in loads of money are typically 2 day bans if they look like a main account.
Hmm, I've heard people say to just record themselves for a couple hours when alching so I would assume it worked, however, I haven't used the software in a while. They might've used a different program too.
I would highly recommend looking at the AHK website itself, when I was writing personal AHK scripts I would use it all the time and it was pretty helpful for that type of stuff.
Pretty much all the crabs would be nice (sand crabs, rock crabs, ammonite crabs, except swamp crabs as they have 100 defences for everything, but range which is -55). Then also maybe yaks, but they have requirements to get there.
Some more monsters that would be nice would be the ones inside of the stronghold place, like goblins, flesh crawlers, etc. Also, if you do flesh crawlers it would be nice to loot them on p2p worlds.
Looks pretty good, read through a bit of code. I would love to see this script in action, but I don't want to risk my account. Hopefully this script gets a lot of use though, looks like you put a bit of work into it.
Not sure if you want to add any updates to it, but you could make it have the inventory setup as it does in the video, then manually use it on each item, which would make it go by tremendously faster.
If you bot on a different ip address does it change anything ie a proxy or vpn. I would try other things to see it's not just a script, because it's likely a pain to change your ip. Depending on how your ip changes.