F2P VIP 0 Player here who are happy to help :-).
To me the most valuable are the Badge Booster Crates as they are life saving to me interest wise to the game. Around the time before the Badge Booster Crates I were so far back rank wise or to say for so few being able to have them high that I were considering giving up and move on, but thanks to the Badge Booster Crates they helped me retain my interest again :-).
The Badge Booster Crates are life/interest savers for F2Ps especially, so I recommend keeping them if not increasing their number as they are a huge source of Player Satisfaction I think.
In terms of Gold I am neutral on, but yeah if wanting to moderate the Gold economy some to make space for double or triple Port bonuses I think that could be something to consider.
I am not sure if the current Prize Wall gives Mega Bits, but could be an idea and yeah think they should at least give 10 per slot unit in the Prize Wall. 1 Prize Wall slot of Mega Bits = 10 Mega Bits. Pretty sure 10 is too little technically, so 100 per 1 Prize Wall slot of Mega Bits could be an idea.
In regards to the Prize Wall characters I have gotten the impression that most of them they don’t seem to be top S Rank good, like were wondering if they were deliberately meant to not be that meta changing given that they were kind of given out for free. Not sure if that’s true or the new Designers who are still learning(hope they are doing good :-). )
I am not sure if I have gotten up any Prize Wall characters for that reason, but yeah maybe one who I really want come in the future :-).
In regards to the Character quests I haven’t cared that much about them beside contests as in to get the 10th score point earning and max it out. If it is a character I am updating I will likely use them.
So yeah, that’s what I have for now I think and hope this can be decent feedback :-).