Then don't do this, ie do not use their wallet
OK, I thought that z-address' use was marginal, so it is not? (https://github.com/BTCPrivate/BitcoinPrivate/issues/124#issuecomment-370402991)
Of course and it should not be mandatory
(is it with cli, too?)
Probably not (why should it be?) Unless this is another attempt to make things complicate for people or trap them
Yes
Probably, then back to the other points above, once you have moved your coins to a z-address then you are stuck with their (shxtty) wallet still recovering from testnet (apparently they did not anticipate the switch from testnet to mainnet), so people should better use my tool or something else instead
I don't think that I am going to implement z-transactions for the tool unless there are some incentive to do so, not difficult, see https://github.com/Ayms/zcash-wallets, everything is in there already (personal implementation of non existing BIP32 for z-addresses)