Yes maybe but the Maserati brand sells better or at least it has more of a luxury image. Making an executive saloon Alfa doesn't work we all know that after looking at sales of the 166 whilst as good a car as it was it just could not pull people away from the usual suspect German marques.
Contigo I agree with your points but I just cant see the QP and Ghibli designs as being successful. They just look too bland and to my eyes anyway aren't recognisable as Maseratis. What I am trying to say is that to be successful they have to distinguish themselves in some way and sell themselves are more upmarket and hence worth paying a premium for.
You can look at any Porsche and know its a Porsche without reading the badge. Maybe its a matter of time whilst Maserati establishes its new look. But I honestly feel that the QP and to a lesser extent the Ghibli do not meet the standard required. Its all down to personal preference and I know that a number of people on this forum like them but they are not for me.
Also, I would much prefer it if Maserati did the following and in this order:
1. Release a cracking 50-60k Sport Car - get the brand more mainstream and more recognisable.
2. Replace the GT with something of similar price or slightly more. Sell 1 to those that aspire to 2.
3. Release the Levante which I think will sell very well if they get it right
4. Then consider replacing the QP with something that sits at a slightly lower price point than the current model but above the Ghibli.
Just my two cents.