Privacy is very important and one of the basic human rights and Bitcoin must have better privacy in future maybe with some second layer, sidechain or code upgrade, maybe even lightning network can be used for privacy.

I am always looking for interesting new projects and I found something called zCash Sidechain using BIP300, zSide and Melt/Cast for making fully anonymous transaction.

One more interesting project I am currently testing is Mercury wallet that is still in early development and it is using something called coinswaps on layer two statechain that enables transfering of private keys without any on-chain transactions.