In the immediate term it would be the same as using a single mode except with higher proportional rewards. However depending on the architecture that is the only motivation needed and depriving others of rewards; in the long term this could result in centralization of routing nodes (by control) and finally censorship.
It also seems unclear how consistent routing work is determined; how does the entire network agree on the minimal routing when there are many routes with the same 'depth' ; it also seems to conflict with minimal amount of routing work is required by the difficulty.
The goal of Sybil mitigation is to prevent any actor from gaining any undue control and this doesn't sufficiently show that to me.
It also seems unclear how consistent routing work is determined; how does the entire network agree on the minimal routing when there are many routes with the same 'depth' ; it also seems to conflict with minimal amount of routing work is required by the difficulty.
The goal of Sybil mitigation is to prevent any actor from gaining any undue control and this doesn't sufficiently show that to me.