Alternatively build a tram system for Brighton and include it in NR ticketing structure. That way anyone travelling a fairly long distance would have their journey on the tram included in their ticket price, but those travelling short distances would have to pay a small increase to go the extra distance. If it were possible to link the two lines which run east/west into Brighton into the tram network and run them as tram-trains that would bring bigger benefits.
A tram system was discussed (quite a while back now), and rejected, from memory due to a combination of high initial cost and lack of flexibility. The ovehead wiring issue didn't go down too well locally either, so a suggestion for using trolleybuses with auxiliary batteries went the same way.
B&H Bus & Coach Co. are currently trialling battery/diesel hybrid buses which work turn and about with conventional vehicles on 'Metro' route 7 (Hove-Centre-Hospital-Marina).
The city is a 'Plusbus' area, and we also now have electronic ticketing. The local bus services are, on the whole, very good, if somewhat pricey for walk-on fares. There's always more to be done in the ticketing area, but there seems a real willingness to look at new solutions, and contact between the bus company and town hall are better than in most areas.
Connecting West and East Coastways has been discussed. Indeed, some services have in the past run between them, via Brighton's platform 3, limited to four coaches, but a combination of restricted practical train length, time to reverse and crossing the main London lines at grade tip the balance against the operation. These days, I believe only match-day football specials to the Amex (Falmer) Stadium perform this trick.
The topography of Brighton also works against any possibility of connecting the coastway lines together. As soon as the East line leaves Brighton, it curves sharply right and strides across a massive brick arch viaduct running very nearly to the first station out (London Road - which it's actually nowhere near!). On the West Coastway, lines (and platforms 1/2) curve sharply left into a cutting before tunnelling under the Seven Dials area on their way to Hove. The old MPD (now a parcels depot) used to lie in the 'V' between the west and London routes.
The main Brighton station
is inconventiently located from an operational point of view, but the last people to try and clear the necessary land to move it south (around 70 years ago) were the Luftwaffe, although they turned out not to have planning permission. A lot of folks down here would say contemporary redevelopments have been little more sympathetic to the city.