docs: update ROADMAP.md and MAINTAINERS

MAINTAINERS

@@ -1,5 +1,7 @@
-Mengxin Liu <mengxin@alauda.io> (@oilbeater)
-Hongzhen Ma <hzma@alauda.io> (@hongzhen-ma)
-Riming Fan <fanriming@chinatelecom.cn> (@fanriming)
-Zujian Zhang <zhangzujian.7@gmail.com> (@zhangzujian)
-Tao Liu <tony.leu777@gmail.com> (@lut777)
+| Maintainer   | GitHub Username                                | Company       |
+|--------------|------------------------------------------------|---------------|
+| Mengxin Liu  | [@oilbeater](https://github.com/oilbeater)     | Alauda Inc    |
+| Zujian Zhang | [@zhangzujian](https://github.com/zhangzujian) | Alauda Inc    |
+| Hongzhen Ma  | [@hzma](https://github.com/hongzhen-ma)        | Alauda Inc    |
+| Riming Fan   | [@fanriming](https://github.com/fanriming)     | China Telecom |
+| Tao Liu      | [@lut777](https://github.com/lut777)           | Alauda Inc    |

ROADMAP.md

@@ -5,6 +5,7 @@
 ### Subnet Enhancement
 - Support to add multiple subnets for one namespace
 - Use lr-policy to optimize ovn flows
+- Support for DHCP
 
 ### VPC Enhancement
 - VPC peering
@@ -21,24 +22,29 @@
 
 ### DataCenter Network
 - Namespaced VPC and Subnet
+- Break down vpc-nat-gateway CRD to eip/nat/lb CRDs 
 - Integrate DPU to support bare metal
 - Integrate SDN switches to support bare metal
 
 ### Application Network
 - Traffic visualization and application level analyzing
-- Windows network support
-- Multi cluster network
+- Windows overlay/underlay network support
+- Multi cluster Service/DNS/Networkpolicy
+- Traffic encryption
 - Fine-grained ACL
 - Load balancer type Service
 
 ### Performance Enhancement
+- Use libovsdb to replace ovn-nbctl daemon
 - eBPF to accelerate intra-node communication
 - Tools for automatically profile
+- Repos for fastpath and optimized ovs modules
 - OVN/OVS tailor
 - SR-IOV and OVS-DPDK integration
 
 ### User Experience Enhancement
 - New document website and optimized for new beginners
 - Helm/Operator to automate daily operations
-- Troubleshooting tools
-- Integrated with other projects
+- More organized metrics and grafana dashboard
+- Troubleshooting tools that can automatically find known issues
+- Integrated with other projects like kubeaz, kubekey, sealos etc.