[Stonewalkers] Chapter 4 advice

[Stonewalkers]:

So, I'm a player going through Stonewalkers... and it got spoiled for me that >!there would be an encounter with the Nightwatcher and a chance for a boon...!<

!And... I'm thinking about getting weird with it.!<

!My character is an offworlder (Nalthis - Pahn Kahl refugee)... and I feels like she doesn't have a home, especially with all her cohorts forming nahel bonds (I mean, I know mechanically there's no reason I can't, but... she doesn't know that).!<

!So I'm thinking about asking to have, effectively, dual citizenship. To be made so that Nalthis AND Roshar are both my home - a native of both worlds.!<

!Hence the weird. I'm the only player at the table who's read past book 2... so I know OOP that humans aren't native to Roshar... but my character doesn't, and neither do any of the other players.!<

!So I'm thinking about trying to sell my ST on the idea that the way the Nightwatcher might fulfill this boon is to give me a gemheart. Make me sorta-singer.!<

!Boon side is obvious - and while good, not OP: Gaining access to the Singer Ancestry with a couple small tweaks (like maybe my Dullform/Workform passes for human rather than passing for parshman). It's cool, and useful in that I'd actually consider spending a Talent or two on that tree... but also, not OP because... well, I'd have to spend Talents to get access to anything USEFUL on it.!<

!Trying to think what, if anything, makes sense for a bane... preferably on-theme, with having a gemheart. Obviously, ultimately up to the ST, but looking for ideas I can pitch.!<