For size and dimensions:
* Broad
* Expansive
* Spacious
* Ample
* Vast
* Extensive
* Large
* Big
For distance:
* Distant
* Remote
* Far-reaching
For range:
* Comprehensive
* Inclusive
* Diversified
For openings:
* Open
* Unconfined
* Unrestricted
For vision:
* Broad
* Open-minded
* Inclusive
For emotions:
* Open
* Uninhibited
* Free
For expression:
* Broad
* Comprehensive
* Expansive
For acceptance:
* Inclusive
* Tolerant
* Accepting
For something lacking in focus:
* Diffuse
* Scattered
* Dispersed
The best synonym depends on the specific meaning you want to convey.