PAS prefers new party be formed, why?

Referring to excerpt from Daily Express today (27-July-2008) of the following :-
“Datuk Nik Abdul Aziz Nik Mat has proposed the dissolution of both PAS and Umno and the setting up of a new Islam-based political party to unite the Malays and enable Islam to be the protective umbrella for all the people, including non-Muslims.”

My understanding towards the above event is that the main aim of the new party is to make sure Islam becoming the political ideology for the peoples of all races irregardless of religions and community. Is it truer that PAS is heading for the so-called “Ketuanan Islam” or “Islam Supremacy” ideology?

How are they going to take care of the rest of the communities in terms of race, religion, and region?

Would there still be the emphasis of Bumiputra and non-Bumiputra?

If this so-called new party is materialized, then the so-called “social contract” that whoever the parties involved during the formation of Federation of Malay and Malaysia should be null & void; so, does it mean that the constitution would remain unchanged for many years to come? Or, it may be subjected to change by the then new government and constitution in order to suit their new ideology?

What will happen to those who do not subscribed to this new party ideology? With same token, can other race or religious-based parties be allowed to do similar setup like the PAS-UMNO merge which is going to be squarely Islam-centric?

This is like the Indian Cast System whereby people fate falls only on their skin colour or group. Ketuanan Melayu or Bumiputra / non-bumiputra partitioning policy is similarly functioning the same as the Indian Cast System which has been known to be the main culprit to Indian nation building and the Indian plight.

I really doubt that this is going to be a positive way forward for Malaysia as I see backward rather than forward. We seem like tying ourselves with ropes in a tiny space than freeing ourselves from the tangles. The merger does not solve the dilemma of Malay nor the religion as it’s the peoples themselves that need to be fixed and not the existing parties that they belong right now. In other words, they are solving their problems the wrong way or perhaps they are trying to distract their supporters for their misgivings.