Yeah. I was pleasantly surprised to see my message there.Looks like Uu made a response to your question.
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And well, as expected, that won't be possible for Sinisistar. But he said he likes modding, so it's something he might consider for his next game, like for example having built-in mod support to add your own characters and such.
So fingers crossed he will be able to add modding support for his next game, that would be amazing!