still not sure about segregated witness, if it not carry any risk, why satoshi has not think about it since the beginning, when he limited the block to 1?
i welcome the synching speed up, this is needed for those that have not strong machine, not my case, as i can sync and open the client in 20 seconds..
Yes, it will be great to be able to open the client faster, in my case, it is very much needed, because my hardware is 5 years old now. About the segregated witness feature, im not sure but if it only has an impact on light clients, it's still important because consider that most people aren't going to be running full nodes anyway, so improvements on this department are welcome.