I don't want a rr load balance for gloo, but I found there is no way to customize it in gloo?

Have a look at wasm examples, all of them seem like do some filter/transform before request backend service. Is it possible to implement a customized load balance strategy with wasm?

just like

1. user request
2. jump into wasm, customize load balance and send dest name to header
3. jump back to vs, with header, it will be routed directly to backend (gloo support header direction)