It is indeed true that a particular word, that actually adds to the quality of the content should always be used.
More than luck, I would tend to think that we ought to listen to world-class experts in the English language who use such words in their conversations and when they write as well.
One such person is the highly expressive and extremely insightful gentleman called Shashi Tharoor. When he talks, there is not a single word that has any mallu accent. This is pretty common among normal people from Kerala. Their English is actually heavily influenced by their native Malayalam language.
He has used the word "cattle class"to refer, if I remember correct, the Indian middle class. This invited a new brand of criticism that extended for many weeks. But his English was praised as well by many who had interest in making their command over their language better. Perhaps his experience at the United Nations, where Mr. Tharoor earlier worked, had led him to fabulous levels of competence with the English language.
Yet, there are many who invent new words and their contribution goes on record forever. The refrence to the "physically handicapped"as "oonutroor" in the Tamil language was considered a rather derogatory reference to their abilities and physical condition.
The late Dr Karunanidhi, one of the biggest contributors to the Tamil language and to development of Tamil Nadu as a State, when he was Chief Minister, coined the word"maatru thirananeegal" ( differently abed) to refer to their dignity and capabilities. This is exactly what can happen to new words coined by scholars. Dr Kalaignar, as he was famously called, could beat any doctorate in Tamil and there are thousands who have become wiser in Tamil, after reading his books and his contribution to Tamil literature through his talks.