I don't know the negative aspects of it. Because all TEPs would mention, "as per the allegations levelled by his own daughter".
In my case, my ex-Father-out-law was slapped a penalty of Rs. 2.21 lakhs. Here is the news item w.r.t. the same
https://khabar.ibnlive.in.com/news/49257/1
Also, in few other cases I know, people have been slapped with recovery notice ranging from Rs. 2 Lakhs to Rs. 80 Lakhs. And in few other cases, I know the out-laws facing heat from Income Tax Department has settled matter for much less than they would otherwise had.
Secondly, it is a case which would be made by Income Tax Department against the out-laws, so you are merely a complainant and nothing more than that. You have no role thereafter, so you don't expand your energies, while they go in defense mode.
I would be keen to hear about the negatives unless you yourself are horder of black money etc.
I have seen TEPs/ Complaints to Sales Tax etc working in favor of accused more than any other thing.
Regards,
Shonee Kapoor
If you don't fight for what you want, don't cry for what you LOST.