Daybreak got a high profile launch and was ridiculed because the hosts deemed were out of touch with the viewers. Channel 4's RI:SE had a deliberate soft launch and fizzled out because it wasn't a great programme (still facing a lot of press criticism by the way)
Soft or hard launch, if the new Daybreak is worthy enough, it will prove popular, but surely if the network is confident enough with the new look, they wouldn't think twice about giving it a big launch?
I don't really see the issue with a big launch this time around purely because Lorraine has been on breakfast TV for years, and anything on the last launch is going to be seen as an improvement regardless of how good or bad it is.