A couple of questions for those already in the know... 1. Any reason to buy on a particular platform other than which platform your friends will be on? 2. If you purchase on PS4 does it 'just work' with your PS account... or do you have to create a battlenet acount? 3. If you purchase on PS4 does it require PSPlus? (Seems some new games don't require it anymore and not sure where this one falls.) Thanks.