I know some will disagree but it won't be missed by the vast majority of people. Data plans have changed so much over the past 5 years or so it's become redundant and the mobile plans will always be much faster/better than the bus WiFi which is usually stupidly restricted to something like 250MB of data anyway which is pretty pointless.

Just an expensive gimmick nowadays.

Sockets are no better on urban routes as by the time you pissed about getting your wire out etc, you'll be getting off. Definitely space for them on sub-urban / rural routes though where people are generally on 30 mins+ like Ashington's routes to be fair.