Gift Sub - Bulk Buying
If you want to gift multiple subs, you can let Twitch pick randomly, giving those subs to trolls, bots, and others. OR you can click each persons name, and gift directly, multiple times. And if you gift multiple times, it can be seen as spamming - and yes, some streamers get mad about being given money like this...
Now, there are multiple feature requests for a better algorithm for selecting users to be gifted a sub. None of which have been acted on in over a year. Perhaps it's tricky to determine the fairness of such a change.
However, generating a simple check box list of unsubscribed users, that a gifter can select from would avoid the downsides of the current auto-selection, would be utilized by those specific users most interested (as to not negatively impact anyone who dislikes the change), and would be simple to implement.
For clarity, this would exist alongside the current "choose for me" approach. A gifter would be able to either method.