We can still choose an address in our wallet to send change like we do now, right?
When using addresses other than HD account, we can still send changes in the old way.
Didn't get the plugin part. Anyway, ETA?
IMHO a "+" button for adding output addresses is better. See brainwallet.github.io/#tx or 'Blockchain.info custom send' pages.
We're planning to do this in the next few versions. No ETA yet. It's a good advice to add a "+" button. Thank you for your advice.