While we don't have as much information as we would like to base our actions off of at the moment, it appears likely that the recent problems withdrawing NSR from exchanges are because exchanges may not be using a high enough fee.
The exchanges can fix this by implementing a dynamic fee, which can be had using our getinfo RPC, but shareholders can also fix it by lowering the fee down to 10 NSR. We ought to pursue both resolutions simultaneously to ensure the highest chance of quickly resolving the withdrawal problems we have observed at Cryptopia and Poloniex.
Therefore, I ask that all minting shareholders vote for an NSR fee of 10. That was the status quo value that the network is adapted to. It recently rose to 100 NSR. If exchanges use a static 10 NSR fee, then their transactions will be rejected by the network.
The risks of lowering the fee are minimal. It is basically that someone will spam the network with very cheap transactions. In more than two and half years of network operation, I have not observed any use of spam or DDoS transactions, so the risk is very low. If it did occur for the first time, the fee could be quickly raised again.
Recent information suggests there are major risks at the moment of having a fee higher than 10 NSR, in the form of our partners' automation not handling that protocol change properly. I strongly recommend all minting NuShare holders reduce the NSR fee down to 10 NSR. To do this, make sure the Unit is set to NuShares, go the Vote tab, and click on the Fee vote button at the bottom of the interface. Then set the NuShare fee to 10.