Islam is the perfect religion for the ex-JW because it is the only one that PAYS new converts compensation for the loss of community that comes from converting. The Muslims expect the other religion to shun its apostates, just as Islam does to those who apostatize.
That said, the only form of Islam that really works within Western Culture in a way that promotes good citizenship within a secular framework is Ismaili. You give the Agha Khan your tithes, he lives the life of an English Aristocrat playboy 10% of that while giving 90% of his millions to various charities that help everybody, not just Muslims. Not my cup of tea, Your Highness, but I won't turn down your charity either and God bless the Ismailis.