Furry Writing, Worldbuilding, and Storytime

I haven't thought about it too much yet since I don't have any bat characters, but one idea I've had was to give them something similar of Pterosaur-style wing-hand structures, except with the fourth and fifth digits being used for the wing instead of just the fifth - so kinda in-between actual bats and Pterosaurs in that regard. Anthro bats would also tend to be on the small size and have extremely large wingspans for their size. They wouldn't be able to actively gain significant amounts of altitude but they'd be able to glide and possibly even produce thrust via flapping for short periods, though this would resemble the slow, deliberate flaps usually seen with dragons, not the fast flaps of a normal bat.

What if you had thumb, pointer, and middle fingers as "real" fingers, while ring and pinky are longer and dedicated to being part of the wing? The wing skin would also likely extend at least part way down their torso, causing them to require special shirts, or those tank tops that exist irl that have unreasonably large arm holes, or maybe even a poncho or something

What do you mean "give them back wings" ? Do bats in your world... not have wings?

I guess the major difference between your world and my world is that you've introduced the idea of 'evolution'. I know evolution is a scientific reality but in my world, there's no need to explain why bat-people exist. They exist for the same reason any other species exists.

In my world, bats are a bit of an oddity (for lack of a better term) because they are more bat-like than they are human-like. They lead different lives from almost every other species to accommodate their unique anatomy. They've built different spaces and forged different kinds of tools for themselves to better suit themselves. And it's fine because my world is a very diverse place.

The "hands" of bats in this world are smaller but can still hold things and manipulate objects (but not while flying). The feet are much more versatile and can carry things even while flying (requires more energy to remain airborne, though).

I have sadly chosen to just avoid bats all together, and the one's I've kept are androids and can just remove their flight gear. when they aren't using it, it retracts into their body somehow, or they just opt to never wear normal clothing if at all.