No! Diversifying is the worst idea! One phone, one model, keep it simple. Android is too fractured, iPhone has one model, with a service pack released about every 9 months. Apple success is because of the simplicity, one model with slight hardware variations over the course of what like 5 years? Which means most apps on the 3GS works on the 4S. OS5 apps don't always work well with OS6, and wont even run on OS7. I love my Blackberry (Have the Torch 8910, wish I had a Bold 9900...) and my Playbooks! OS2 is amazing!
Ditch the Curve, Torch, Storm, Pearl, That silly flip phone thingy, and stick to the Bold. Keep the Qwerty, more battery life and security hype, and hammer it home that App World has just as many app's as any other App store out there (Take away the 1000's of duplicates and you have about 33,000 unique apps, about the same as BB App World.)
Go #TeamBlackBerry!