This is what I mean..
One should have an offline computer, I'd like to sign a transaction on it, burn it to a CD and post it onto the blockchain from my online computer.
Isn't this exactly what offline signing as supported by, for example, Armory, is?
maybe he want this to work directly with core, without the need to download a specific spv client for any new feature
This. I don't want to have 15 different wallets for 15 different reasons.
I use bitaddress.org and core, would be nice if that is all I would have to use.
if your going to use an offline PC. there is no need for bitcoin-core on it. as you will never download the blockchain.
instead you can have some code that you simply type in the funded privkey and then the destination and amount.. to create the offline tx
bitcoin core is about the network/protocol security of the blockchain. and offline PC's dont need to worry about that as they never online.
so much easier to have a different program make your offline tx, put it on cd. then on the online pc, paste it to a mining pools api..
I need to learn that other program to do this..