Regarding MMS: So, by that reasoning apple shouldn't have discontinued bundling 3.5inch floppy drives with their computers?
Forwarding SMS's: again, it comes down to complicating the interface, and let's be honest how often do you forward messages? messages that aren't stupid jokes? or chain sms's?
Multiple user SMSs: Certainly, i can see a use case here for this feature. however, apple has chosen to keep things simple for the time being, and really push this new "conversational" sms view. Which currently is grouped by single recipients. By adding multiple members to a conversation, the list view would have to be changed, and the concept of billing for multiple recipients gets a little more confusing too. Ie, if you send a message, and your bubble pops up on screen, but you sent it to 20 people. do you think the average schmuck is gonna understand that it's gonna cost him 20messages credit? considering, it's only shown as a single message bubble?
Baby steps people. I will look forward to the ability to get multiple recipients, but it has to be done right, and in a way that isn't confusing to joe-public. (yes, most mac rumors people are very smart.. but these aren't the people apple is targeting.. they're targeting EVERYBODY!)