Just so I have this clear in my head, are you saying it's impossible to achieve an offline mode, or that currently it is unfeasible due to resource/time/finance restrictions?
If it is the former, then I think you guys need to take a step back, (which you have already initiated), give it a few months, a year or whatever and rethink it once the resources/time/finances allow. Because we both know that nothing is impossible with software.
If on the other hand it is the latter, then follow the exact same advice ;P
With both eventualities release a public statement, (sooner rather than later), saying that offline was cut because of delays it would have caused to the release, (but do it properly this time), and that you will revisit the offline mode at future date.
Not only will this restore good faith, (for some or maybe even most), but it will placate the fence sitters; lets face it, the majority of us have been waiting 30 years already, another 12 months isn't going to kill most people.
P.S. This post may seem arrogant or condescending, but it is not intended that way; I know you are professionals, but when transparency starts to become opaque and bomb shells start fragmenting it's usually best to do something quickly.