Not nearly as entertaining as recent international affairs that may be driving more interest to the space.
-CheckSequenceVerify (CSV)
-Replace-By-Fee (RBF) -> See Peter Todd and https://medium.com/@bramcohen/how-wallets-can-handle-transac...
-compact blocks
-segwit (already been released, waiting to be activated by miners)
-good progress by the 5 implementations (alpha-versions) of the Lightning-protocol (hughe improvement on scalability and even privacy by using TOR). See Rusty Russell: https://medium.com/@rusty_lightning/the-bitcoin-lightning-sp...
Compact blocks are definitely an improvement for the network though.
more access, better tech, fewer scams. Where do you see that we are the same as we were a few years ago?
http://www.coindesk.com/bitcoin-price-trading-highest-level-...
This stuff is brilliant.
If you are using it for tax avoidance or money laundering, it is already illegal.
Ofcourse things are easier to hide if you want to for a while, but how would you turn it into actual money if we are talking large amounts?
In the other hand private "blockchains" are waiting for a killer and real implementation.