I suggest adding in a large sum of iso as a drop in the tokens. Im talking like 1k, 2k, 5k, 10k etc. The larger the sum, the lower the probability of course.
The Anniversary tokens had results like this, and it was awesome. Obviously it would be smaller or less frequent in other tokens, but still a welcome addition.
anniversary tokens also included 2 denominations of hero points in them.
I think there is also something to be said for having those in the tokens as well… not a huge amount… maybe 2 denominations
1 - enough to buy turn around and buy another token (call it ‘spin again’)
2 - enough to buy a 10-pack of tokens…
(or heck, even just have it be a 10-pack token? - with the understanding that the 10-pack token is not available in the 10-pack drop - and whatever odds used to be devoted to that item could be used to raise the drop rates of 3* and 4* characters..)