Regarding improvements for Cisco N9300 Series Smart Switches, I think the only issue that could prevent users from using these devices is the smart licensing, as the license model could be much simpler and more cost-effective. Managing Cisco licensing and tiered subscriptions involves unnecessary operational overhead for deployment and renewal. Also, if you are planning to use ACI mode, most of the concepts such as VRF, EPG, and tenant will change. When deploying in ACI mode, the architecture has a steep learning curve, as the policy-driven model requires expensive and specialized training, and many concepts will change for traditional network engineers, requiring them to adapt and learn. Additionally, most of the issues I faced are related to hardware cost specifically, so if we could get a model that is less costly and more cost-effective with simpler licensing, it would be much better. Regarding further improvements, I remember something about the upgrade process. When we did the upgrade for the N9300, changing the image took us around 12 to 15 minutes, which was really a long time. This happened for more than one switch, so I do not know if it is a bug or if this is something normal, but I think they need to address it.
