RE: Do we need new rounds?
I'd rather that they churn out the 'staple' cartridges like .223,.308, 30-30, 270, 300WM ,and 30-06 than to spen production time and tooling on 'boutique' or 'niche' cartridges that very few people will buy and which the manufacturers will have to subsidize by raising the prices on their more popular cartridges. Case in point: Hornady makes a larger variety of cartridges than anyone else, but their prices even for common chamberings are usually much higher than anyone elses'.