It could be the basis of a Lovecraftian horror, or an alternative to a warp entity for 40K, or a very different tactical challenge for adventurers and armies, the kind of thing you might find in Call of Cthulhu, sword and sorcery or a wargame like this, maybe a demiurge...
The original post has a few more suggestions too, thanks to John Till and garrisonjames.
I want to generalise the concept through a simple tool, so below is a table for six general braner aspects for mixing and matching. The noö-braner is now a 'waker-weaver-wisher'.
A random approach to making your own could be rolling 1d6 for the number of aspects it has and 1d6 on the table for each, treating duplicates as greater intensity in that aspect.
Braner aspects (1d6)
- Waker - The osmotic or conductive structure of this braner allows the absorption, mingling or transfer of material among those regions currently located adjacent to it, enabling the formation of a reservoir or conduit for transdimensional interaction.
- Weaver - Highly elongated or filamentary, this braner binds manifolds, perhaps forming a basis for a reality by bracing its fundamental particles, macrostructures or universal shell; its loss, transformation or relocation may lead to local collapse.
- Whiler - Whether hibernating, pupating or paralysed, perhaps lying in wait, this braner is more or less inactive, representing a temporary hindrance to travel via the region and gifting its current transdimensional location a misleading stability.
- Whisker - This braner hooks, envelops or dislodges elements of nearby regions, stretching or carrying them out across a dimensional horizon, perhaps shifting, telescoping or inverting the local form; they may be returned, irrevocably altered.
- Winder - The tension, mass or construction of this braner warps the coils of the dimensions it spans or crosses, thereby spontaneously reordering, separating or fusing these dimensions and sparking sudden shifts in reality for the inhabitants.
- Wisher - Possessed of a morphic structure - perhaps plasmatic, gelatinous or nanitic - or capable of transdimensional lensing, this braner is able to generate, modify or mimic any or all of the elements of a region, including the inhabitants.
They're building blocks only of course, for you to decide the wider nature and the detail of the manifestations. For general mechanics, assuming they'd apply, you could look at the ideas in the first post. For less usual contexts, the possible new genres might be a good start, especially body noir, glossed world, retro time travel and sword and reinette.