I can understand, I guess I’m used to seeing the “enemies teaming up against a greater threat” trope that I don’t see Risky just turning over a new leaf like that. I mean I wouldn’t be opposed to the idea, but honestly I’m not entirely sure I want her to, who else would take her place as the series’s antagonist/foil to Shantae?
You can have her become an anti-hero, who protects Sequin Land her own way (namely stealing, threatening to use force and lying to meet her goals). She can still "attack" Scuttle Town on regular basis to keep up appearances/spar with Shantae.
I mentioned this before, but it could start with her doing an unintentional good deed like she does with Giga Mermaid in Pirate Queen's Quest, such as ''conquering'' a town run by a tyrant. From there she tries to reconcile the good feeling that comes from said good deeds with her dark magic corruption-induced desire to ravage and conquer. It's especially tricky because she's
well aware acting altruistically can cancel out dark magic, and will initially make a concerted effort to not do so in fear of losing the strength she's gained from said dark magic. We see this when she tries to vehemently deny helping Giga Mermaid out of goodwill, instead of, say, milking some sort of dishonest alliance out of the turn of events. She's incredibly shy about being nice, even as an act, likely because she's worried she might actually
like it.
Well, here's some really cute Shantae artwork, for you guys to enjoy!
Hey! I just realized Shantae can pretty much transform into every animal buddy present in Donkey Kong Country 3. Ellie (Elephant), Squitter (Spider) and Squawks (Harpy). Mermaid is close enough to Enguarde, right?
Edit: So I had a look at the list of possible online avatars, and... holy moly were we lucky. They were organized by franchise, with the last section being miscellaneous. Said section has only
five avatars total, including Shantae. That's quite the honor...