I personally would not have a problem if Yahweh or Jehovah was used in the NT when quoting directly from the OT. For Example, when Paul refers to Joel 2:32; notice LORD is used rather than Lord, indicating it may be legitimate to use God's name in the passage. The NKJV is possibly the only modern translation which does this.
For “whoever calls on the name of the LORD shall be saved." Romans 10:13 NKJV