If you ask this question, then no. Otherwise, you know the answer. Further explanation on #1 You lack the experience required to understand the ramifications,

If you ask this question, then no. Otherwise, you know the answer. Further explanation on #1 You lack the experience required to understand the ramifications, make the judgement, change the code. Gain experience, learn more about this codebase and you will "know" one day. Given that, one of the "best" ways to gain experience is to make and suffer through recovering from mistakes, change away!