I've handled the OM-3 in the flesh and the viewfinder was not something I would have remarked on. It's perfectly good and I didn't for one second think it was in any way not good enough.
There's a difference between not good enough and not competitive. OMDS could have used a 20mp sensor in the OM-3 like the one found in the entry level E-M10iv; it's good enough right?
I believe the focus on specific spec items is a massive diversion. I've handled an OM-3 and viewfinder resolution was just not something that even occurred to me - and I currently shoot with an OM-1ii. I expected to think it was a downgrade, but I didn't.
Not sure I would call it a diversion.
(1) But I can see a limited number of diehard Pen F'ers to be negative who wouldn't settle for anything less than the rangefinder style....period. They don't want to face up to the fact that the rangefinder style isn't in the works now or in the future for OM Systems. They will nitpick the OM3 to death.
(2) I see the FF framer users who do not seem to be overly fond of anything less than FF regardless of any benefits. They will point out anything wrong with the OM3 and I don't think this is OM Systems intended audience, even though they will be vocal.
For Positives:
(3) I see many who shot the original OM1 film cameras to embrace the OM3.
(4) I see many young people who enjoy 'retro'....to embrace the OM3. They might not be able to afford but I think they like it.
(5) I see many OM System fans who now shoot any of the E Series, the OM5, the OM1 etc...to be on board.
(6) I see many people who have GAS to be on board.
(7) I see many people who call themselves street shooters to be on board.
(8) I see many people who enjoy wildlife photography to be on board.
More pluses than minus's...Remember this is a niche camera with a niche company.