When playing with less experienced players, or a player who has taken a heavy hit (lost many planets), continuously shift-clicking the give credits / metal / crystal buttons can become annoying. Even though I sometimes only want to give a handful of credits, I would like the ability to share a portion of my income with another player.
For example, if I am making 100 credits per second and I want to share 25% of my income with player X, I would then be able to give player X 25 credits per second without having to continuously send player X more funds. If player Y later needs money, I could send 33% of my 75cps remaining income to him/her leaving me with a total of about 50 credits per second.
In addition to the above idea, when economies become very large, and I wish to transfer 20,000 credits to another player, I end up having to click the give credits button a lot! I would like to keep the give credits button because this works great for small amounts, but maybe an additional box where I could enter an amount, or a slider that I could select a percentage of my saved credits would be nice.
These are just some ideas.
Aquaflight