I wish there was a way to steady the aim further.

For this issue you comment on, I can only say that if mouse acceleration is set to OFF or too low (slider value doesn't seem to save in alpha apparently when its too low, perhaps indicative of the slider being incremental and not eh a linear value), then my aim seem to skip and it is very difficult to aim at anything precisely (like with Arma 2).

On the other hand, Welcome to reality! This is what its like in real life when u are aiming. Trust me.
Try some deadzone in options?

I have found maximizing the smoothing and enabling acceleration mitigates this problem somewhat. Perhaps that should be made the default setting, if the engine cannot otherwise be made to reduce this problem. It is kind of something that's always been around in these games, but it seems the more stuff the computer is doing the worse it gets.

yeah i couldn't get the deadzone to adjust for my mouse... maybe another bug, or a TrackIR complication

Deadzone doesn't work properly as the mouse sensitivity is too high inside and not high enough outside.
Should be same for both

It worked fine in ARMA2 so why is it so screwed in ARMA3!?!?!

I found that messing with the mouse smoothing level fixes, needs some testing while messing with it though

We could not reproduce this bug.

Please let us know if you are still able to reproduce this issue in latest Development build. Thank you.

Closing due to lack of feedback. If this issue is still reproducable for you, please create a new ticket for it or ask for this one to be re-opened.