Why not some dirt-drops? On One Midge has reach of 60mm, Salsa Woodchipper has 50-something mm, as far as I can tell. Maybe not quite as wide but reach is better.
It's a good question, I guess like to have a more road-focus shape than a proper dirt drop bar as the shape is more awkward if you intend to ride on the hood predominately.
I genuinely want to try bar that wide after riding with a 46cm handlebar.
Maybe the Funn G-Wide in 48cm or even 50cm might be a good upgrade, reach quite long tho, not sure how much shorter I can run my stem as.