1. Bringing up the fact that Steyr wasn't interested in a limited buy is a bit of a smokescreen isn't it, considering the limited buy is off the table and thus doesn't represent the current issue at all?It matters because the wider government context is important, and because they can often be informative of the commercial terms offered and their acceptability or otherwise to the Crown. Dave had indicated that the Steyr manufacturer wouldn't play ball on small numbers in his earlier post.
I don't have Dave's breadth of experience on the range of weapons, but I've had experience with the Steyr and the M4 family. I've also had extensive experience as an instructional designer. The idea that all things can be resolved with training just isn't correct. Good training can only teach the trainee to make the most of the tool they have. It's never going to give the trainee silk from a pig's ear.
You could also look at what the Police have in common with some of the Defence community and see what capability overlap there is. Taking an objective look at roles and missions you'd find more in common than different for most users (recognizing that infantry are in the minority of users).
2. I never said training solves all things, only the things you mentioned.
3. What does instructional design have to do with training people for proficiency with varying types of firearms?
4. Can you explain how you know then that it is harder to achieve proficiency with bullpup rifles relative to more conventional rifle designs?
5. Different post, but you bring up the police and the fact that with limited training time they can achieve proficiency with their Bushmasters - but is that a reflection of training standards or of the weapon itself? They're not mutually exclusive, and they do both factor into your point, but you appear to attribute it to the rifle, not the training or the level of proficiency required to be considered qualified on the weapon. It's not unreasonable to think the Army is probably going to train to a higher standard to be considered "qualified" with rifles relative to a civilian police force...