They should drop the tax status.
Having the exemption makes the church subservient to the federal government.
The church probably wouldn’t show enough profit to have to pay taxes.
Why should there be a profit at all?
Sadly, in most cases, it is not that the church would owe taxes that would be the biggest issue - it is that too many of the congregation would stop giving tithes and offerings if they could not deduct them from THEIR taxes. Only a small percentage of regular church attenders even approach giving a tenth (tithe) of their income - that number would approach zero pretty quickly if the tax deduction would be taken away.
We have already seen the beginning of the separation of the wheat from the tares with the open apostasy of the Episcopal/Anglican churches, many of the Presbyterian, Lutheran, Methodist, UCC churches, etc... I think we will see that process accelerate with the coming persecution of any churches that hold fast to biblical principles. We will see which churches and which "Christians" are truly committed to Christ. If they will change their doctrine to keep their tax-exempt status, or to be more "culturally relevant", then they are not serving God - they are serving Mammon.