I don't hear anyone proposing that the plan view be done away with, and I am new to this thread Matthew, but why couldn't plan cuts - as an enhancement and addition to the traditional AC plan view come from the 'reference levels'? With the option to look up or down?
As for multiple windowing that retains viewset behaviors, right on.
I love working in Maya for this aspect of windowing and how the tumble pivot is handled - I have accepted the 'look to' button as a near equal, but not as elegant in AC's 3D navigation.
Having a single hotkey (in Maya the spacebar) to toggle between 4 views and plan view is very powerful and fast - AND each 'view' or window can be predetermined as coming from a respective 'camera' - which in the case of ArchiCad would be a given parallel view, or maybe even a 3D view, in the form of a pulldown menu/jumpmenu at the top of the windowed view, the jumpmenu would show all views (Elevation N, S, 2nd Floorplan, etc.), and the hotkey would split the main window into user-defined views, say 4 to start with, 1) Plan - traditional, 2) Default Front (3D view not elevation), 3) Default Side (3D view), 4) Default 'Back' also axo/3D view, then add plan cuts with a tool like S/E's, look up or down, and its elevation - the plan cut tool, can be manually set/adjusted in the 3D windows/views - which effectively alters the reference level.
Each Plancut S/E Marker/tool/instance carries its reference level.
Then, ah, wishes for proper modelling, I have done so many weird booleaned meshes saved as rotated library objects (for my colleagues, for they have dared not venture into the dark world or radical AC modelling yet, where I have no choice) I cannot number them, this month alone! Crazy architects!
Please GS step up to the plate with some proper stretchy GDL commands, autofolding behavior etc!!!
Andy Thomson, M.Arch, OAA, MRAICDirector
Thomson Architecture, Inc.Instructor/Lecturer, Toronto Metropolitan University Faculty of Engineering & Architectural Science
AC26/iMacPro/MPB Silicon M2Pro