Thank you for pushing a quick fix! Users will appreciate it.
This might sound very demanding, but as variable fees are a part of Nu I think it isn’t optional to have them properly handled by any wallet or accounting system - either on exchanges or mobile devices.
Burdening users with adjusting them manually is no solution, rather a more or less feasible workaround depending on the awareness and skill level of the user.
Exchanges that can’t handle dynamic tx fees automatically and reliably would do better to delist NBT. If they just use the standard wallet, they should be in a nice position.