It would actually help if it was Islamicized. But it's really not that hard for Champa to end up being ruled by an Islamicized state.
In the 1470s-ish, Tra-Toan (his Viet name) ended up getting his state completely run over by the Vietnamese. Lê Thánh Tông, the Vietnamese emperor at the time was a pretty competent administrator and general for the terrain of Vietnam. Tra-Toan was on the other hand, both very unlucky and not as gifted militarily. Toan organized a large invasion northward, but his plans got caught and it completely failed, leaving Champa a wreck and open to Viet ethnic cleansing.
However, Toan's son ended up starting a dynasty in Aceh. If Toan spends a little less time war-mongering and a little more time exporting his family overseas, he could forge some important dynastic links with traders elsewhere. If this happens a bit earlier than OTL, and the Champa royalty decides to convert to Islam, it would be interesting. I don't know if it means Champa can really resist colonization by the Vietnamese, but it may mean that more Champa migrate around Indonesia.