Probably not, view would still be poor and it would kill the atmosphere. Liverpool for example, the atmosphere comes from The Kop, which is 1 tier (albeit a large one).
Ah yes - BML2 - the fantasy plan that will never happen because its totally unrealistic and would cost a fortune. The line...
Utter crap - probably just the club asking the architects to look if it can be expanded. It would require a lot of work though including a major North Stand revamp and i doubt that work could be done during the Summer. I cant see how an extra tier on the North will work, most of the seats...