I don’t believe that funding the rewards module is relevant to this proposal; I think it’s good practice to stay focused on individual discussions, especially since this one is critical for migrating to v4. We may separately open a new thread to discuss trading rewards on v4, or refer to this topic.
In response to @RealVovochka's question
There are two limits to DYDX token rewards per-block, which are controlled by the “Emissions” parameter (how much the module gets funded every block) and the"Discount" parameter (max discount on fees each trader can receive). Both parameters are controlled by governance. In short, there are certainly limits to how much governance will pay in rewards. Hope this answers your question!