Compelling reasons for having CE in addtional to NW EP

What would be the compelling reasons to convince the management to have another server running CE 7.1.1 in addition to the NW 7.0 EP server that we already have?
My company is doing some custom in-house development using WDJ and VC.
We would be moving to NW 7.0 EhP1 in the near future.
Is there anything that CE has that NW 7.01 doesn't that will provide the reasons for separately installing a CE server?
The following are what I've gathered so far:
a. The new WDJ AJAX features only be available in CE 7.1 and will not be downported to NW7.0: /people/oliver.mayer/blog/2008/11/17/web-dynpro-java-and-ajax-in-sap-netweaver-ce-71-enhancement-package-1
b. CE is lightweight, no KM or Collaboration
c. CE can have a different upgraded path on its own
d. BPM and BRM are on the CE, not NW
Am I correct and is there any other reasons?
Thanks.

Hello,
there're several reasons why an additional CE server makes sense in your case. First of all I'd say that you save development costs. In regards to VC we save between 20% to 30% in our inhouse developments with VC CE 7.1. Using the model migration wizard of VC Ehp1 you can actually quite quickly migrate your model to VC CE.
An other reason is higher performance at loading the VC iviews.when using HTML runtime.
For WDJ I see the new features of VC CE Ehp1 as very helpfull, e.g. Drag and Drop support as well as flash islands. The extend CAF service features help you reduce development costs as well. Everything is just less time consuning.
Hope this helps.
Stefan

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