I would like to clarify few things about this feature request, as I suspect things are mixed together at the moment.
1. Being able to have multiple views on the same model - This is possible without hacks and without unjustified amount of development only in VS 2010. This means that Either we branch entirely the codebase for the VS2008 and VS2010 designer (which is a project on its own) or with time we obsolete the VS2008 designer. Either ways it would be a tough decision and we have to take first and foremost our customers opinions... So expect a survey very soon. Until we have a clear perspective what we have to do in this domain we will not act in a hasty manner.
2. Being able to fragment the model in files and/or sub-domain parts - Please read the answer above.
3. Having UI to apply filtering on the actual designer view - We are in the process of devising such an UI interface but things are moving slowly as we hit numerous problems with usability. Maybe this piece of functionality will be introduced later with Q1 SP1. Until then we will probably provide only commands for hiding and showing the entities per users request.
the Telerik team
Registration for Q1 2011 What’s New Webinar Week is now open. Mark your calendar for the week starting March 21st and book your seat
for a walk through all the exciting stuff we ship with the new release!