So is there any kind of advantage to having the full node?
But, everything together isn't taking up 2TB, is it? You are already preventing the future, right?
Many advantages, one is that you get to import a new key on the wallet, but if it is half node I think you cannot run another wallet (imported key) on it. Because an importing a wallet will need transaction history of that wallet and it might be that the few blocks there will not have all of them available.