So maybe Malaysia will become like India where the two main parties/alliances are a nativist and religious bloc against a multi-ethnic, multi-religious, secular bloc?
Unclear. A lot are revolving around key personalities like Mahathir and Anwar with both, especially Mahathir, likely to pass on from the political scene soon or eventually.
If I had to guess it will be 3 blocs with one around PAS as an Islamist force, one around PPBM, and one around PKR. DAP most likely align with either PPBM or PKR depending on which one has a more multi-ethic tilt with the other one being more focused on Malay but secular nationalism. A rump UNMO will ally or merge with the more Malay nationalist of these two. On the long run I think PAS will be the most powerful bloc.
Why do you think the Islamist bloc (PAS) will be more powerful than the Malay nationalist (PPBM) and the cosmopolitan/multi-racial (PKR) blocs?