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Hello @Clarke1 your idea sounds very similar to the Player Card that has just been announced. The Player Card is another one of your friends avatar that you can click on to find out information about that friend or interact with that friend.
I would suggest that you leave your idea as feedback in the thread about the Player Card.
Here is a link
I must admit that generally speaking I am also against any idea that means I have to use my own boosters or gold bars. Gold bars especially are too scarce in the game and any feature that requires the use of a players gold bars would then favour those people that buy them.