What do we really need SAP portal for?

Hi,

We already have a portal platform for intranet (not SAP based). I am trying to assess what I need SAP portal for. Looking at what we are likely to deliver, I can only spot 3 requirements for SAP Portal. Can someone let me know what else i have missed?

SAP things we want to do:

- SSO. SAP Portal not required. Can access AD using NTLM

- Web Applications. Again SAP Portal not required. We can write web dynrpos or expose web services using the web server in SAP ERP or CRM.

- Adobe E-forms. Again SAP portal not required as it can be rendered within SAP web server

- ESS/MSS. Yes, SAP portal required. Plus any other business packages we might want to use in the future

- Universal worklist. Yes, SAP Portal required

- Guided Procedures. Yes, SAP Portal required

- Enterprise search. SAP portal Not required

- Mobile. Blackberry/smartphone support. SAP Portal not required.

- BW web reports. SAP portal not required.

- Visual Composer. Not sure. Do we need SAP portal for this???

- Anything else??

Looking forward to your help.