Everyone has self interests, More so when a behemoth is a next door neighbor, Why do you think all of India's immediate neighbors have apprehensions about it ? You can argue about Bhutan but then again Bhutan is independent in namesake
Especially given China as rightly mentioned in this thread has achieved military parity with the West and most probably will be the most powerful nation by three decades
India's neighbors are apprehensive of India. It is reflected in their weakness. Let us look at India's neighbors one by one
Pakistan is locked in territorial dispute. There is not much anyone can do.
Bangladesh has settled down with respect to India. In the past they have been a lot weaker.
Nepal and Bhutan are landlocked. They will always be apprehensive.
Sri Lanka has issues with India over Tamils and foreign military bases. With the LTTE crushed and no bases for China India-Sri Lanka ties will be okay.
Mynamar is fine with India.
Maldives is fine with India.
The real complaint India's neighbors have is the inability to exploit Indian market for their economic benefit. It is a valid one.