A friend of mine always interrupts when anyone uses the word "postponed", saying that there is no such word. It affects the actual discussion. Yeah I do agree, there was no such word. But when it is accepted and understood between all the people in India and even some dictionaries include that word as belonging to Indian English, I do not see a problem.
If someone is creative and cooks up a word in their mother tongue, they are viewed as smart people where as when you do that in a foreign language, your own people consider it as lack of fluency. The same applies for accent and pronunciation.
On the same note, there is another word: post-paid(use & pay), cooked up to be the opposite of pre-paid(pay & use) where, post-payable would have been more appropriate but, post-paid is easy to understand.
Let us keep the evolution going