I am about to dive in on the 200U, and I think I may be putting it to the ultimate test.
Light control is absolutely not possible. Take a look at my pics, and you will see why lumens and light harmonizer are BIG selling points for the Panny. Windows, windows, and more windows.
The screen in a Da-Lite HiPower 106". You can see the pigtail of cables ready for the PJ. That is about 14' from the screen.
These were all taken right after the remodel and before we moved the speakers, components, and furniture in. Obviously we will not be watching movies sitting on that table.
I would appreciate any comments or ideas.