I agree with you that this change GingerWallet made can negatively impact the interest for their software. Kruw's coordinator has the biggest share of the traffic already.
Using Wasabi Wallet means you can select any coordinator you would like including without paying fees but using Ginger Wallet means you have to use their default coordinator and pay 0.3% fees. Given those options, the choice is clear for potential users.
If Open Coordinator continue with their zero fees policy for several months more, they might close the gap on Kruw significantly.
The Ginger Wallet client provides more efficient management for users with larger coins. Instead of creating a large change output that requires multiple rounds to break down, Ginger splits the coin into 4-5 smaller parts in the first round.
These smaller parts align better with the denomination levels, resulting in a more efficient coinjoin process.
If you plan to use the Ginger coordinator, we recommend using our client to avoid these unnecessary decompositions.
Ginger can be installed independently without interfering with other clients or coordinators.