It is a good question. Our religion has always accepted different viewpoints and incorporated it in it. That is why nobody considers it as a harm, when some guy goes and prays to christ.
But the problem that will surface now is, how will it stand in front of religions which considers their belief is the only correct one and other's beliefs are wrong. Such religion has in the past and still considers others' gods and prophets and devils and satan.
How a tolerant religion will withstand the onslaught of agressive religion is a question mark to everybody?
But if we becom myopic and intolerant like other religions, I dont think it is a good idea because Hinduism is not a single idea but motley of different ideas evolved over time.
