After the announcement (link at the end of the page), it seems that Azure Stack will be provided only through CPS after GA, and that we will not be able to deploy it on existing hardware. This is really disappointing for customers (the majority) aiming to use the existing hardware to bring Azure services.
We want to be able to deploy it on existing hardware

We know that Azure Stack is consistent with Azure and does not support Generation 2 VMs. Only Generation 1 VMs.

Maybe you can something implement like an option / a switch we have today for VM roles in VMM & WAP.

-> http://www.danielstechblog.de/scvmmwap-ur6-vm-role-gallery-item-generation-2-vm-support/

Service Bus is a common component in many applications and integrations. Widely used in my organisation.
To have this feature in Azure Stack would be fantastic.

The Azure Consistent Service Delivery session of Microsoft Ignite 2015 (https://channel9.msdn.com/Events/Ignite/2015/BRK2484) details an overview of the Resource Providers that will probably be part of Microsoft Azure Stack. I'm missing SMA in that list. Will there be a version of SMA in Microsoft Azure Stack, that has a tenant experience consistent with Azure Automation in Microsoft Azure?

When is comes to app development on PaaS platforms, Databases and DBaaS are "core" & "can't-live-without".

I see them already included in first release ;)

Enterprises with special security requirements, often do not have a direct link to azure.com, which is currently needed in terms of Azure Active Directory in Microsoft Azure Stack TP1 PoC.

Therefore a third Setup method beside AAD and AADChina, namely an integration into an on premise AD would be required.

It is clear, that the whole automation and provisioning process of MAS has to be coordinated with all its components.
But this also could be achieved by provisioning one additional virtual machine via the MAS-PoC-Powershell-Installer, which is a Domain Controller.

We waited for a backup plugin for Windows Azure Pack, which never came. As a hosting service provider and a large enterprise with dfferent departments to cater, being able to provide backup as a service is key. Please bring this resource provider with GA of Azure stack please!

APM-tools are crucial in our organisation. An on-prem solution for this is important for organisations that aren't allowed to store data outside on-prem datacenter.

Would be a shame to be forced to use other on-prem software like appdynamics.

Industry sector (with integrated IIOT) will certainly appreciate Azure Stack - power of Azure in own Datacenter.

Since Portal and ARM are consistent across clouds it would be awesome if we can manage an Microsoft Azure subscription from Microsoft Azure Stack (preferably add to ARM like a region). And vice versa add a Microsoft Azure Stack region to Microsoft Azure (preferable as a region in ARM for that tenant).

Implement Site 2 Site VPN as in Azure - to connect Azure Stack to your OnPrem Network

Please create a Azure Billing Admin roles delegation

Azure stack currently supports only DAS for its disk infrastructure. Unfortunately, many on-prem datacenters use SAN for disk and blade servers that can't be reused as we start to utilize Azure Stack.

The ability to point at SAN would allow us to quickly build up azure stack infrastructure.

Redis Cache is important part of every scalable SaaS aplication.
SaaS vendors will be able to offer their solution on-premise for big corporate customers willing to use their products behind the firewall.

We know that Azure Stack is consistent with Azure and does not support the VHDX format. Only VHD is supported.

Maybe you can something implement like an option / a switch we have today for differencing and dynamic disks in VMM & WAP.

-> http://www.danielstechblog.de/scvmmwap-ur5-vm-role-gallery-item-disk-deployment-changes/

As a hosting service provider (the majority who will use Azure stack in production) and large enterprise, customers wanted the capability to provide Desktop as a service (DaaS) for Windows Azure Pack. We need this cloud service in Azure Stack for GA.

Data factory and ML form a great combination to make use of the existing on prem systems and legacy data and get significant value really fast. It would be great to have these 2 tools bundled in the azure stack.

Please support Cloud Services (Web Role and Worker Role) in Azure Stack.

Enterprises tend to have all kinds of policies in place related to conventions. allowedValues for parameters in an ARM JSON template can be easily worked around by using PowerShell to communicate with ARM directly instead of going through the portal. ARM custom policies in Microsoft Azure (https://azure.microsoft.com/en-us/documentation/articles/resource-manager-policy/) enforces conventions at the ARM level. Please bring the policy capability for ARM over to Microsoft Azure Stack. This is a much needed capability for Enterprises.

The azure stack deployment should stretched to fit deploying the it on multiple servers that work concurrently incase of failure.