Look at all the comments under the announcement. Really sum's up how I feel as well. A selling point of Opera was the built in email client. I liked how Opera used to be a silo for a whole bunch of features. When you closed it the rest closed as well. Was a great way to turn off work. Now we have ANOTHER fairly generic stand alone email client. ANOTHER fairly generic webkit browser. If it wasn't branded with an Opera…
Honestly, it sounds like you want an OS running in a virtual machine. Nobody is going to pursue your ideal "monolithic productivity suite that does everything" path; it's just a plain-bad idea.