Considering the vast amount of traffic that place suffers from, it could definitly do with one! Visiting my gran in Horndean would be a damn sight easier!
I was going to say 'Brixham' but, alas, I'm responsible for most of it's mentions here!
In quieter (or is it dafter?) moments I've imagined a full South Hants Underground network:
Basically it would have the following lines each of which would run every 15 minutes:
Rownhams (M27 P&R), Shirley, Southampton Central, Southampton Ocean Village, Hythe, Fawley, Cowes, Northwood, Newport, Wooton, Haven Street, Ryde St Johns, Ryde Esplanade Low Level, Portsmouth & Southsea, Southsea, Eastney, Hayling Island, Stoke, Havant, Bedhampton North, Purbrook, Waterlooville, Horndean (A3 P&R)
Rownhams (M27 P&R), Shirley, Southampton Central, Southampton Ocean Village, Hythe, Fawley, Hamble-le-rice, Locks Heath, Stubbington, Lee on Solent, Alverstoke, Gosport, Portsmouth & Southsea, Southsea, Eastney, Hayling Island, Hayling East, West Wittering, East Wittering, Selsey, Padgham, Bognor Regis, Middleton on Sea, Littlehampton.
Ventnor, Shanklin, Lake, Sandown, Ryde St Johns, Ryde Esplanade Low Level, Portsmouth & Southsea, Gosport, Brockhurst, Bridgemary, Fareham
Stubbington, Lee on Solent, Alverstoke, Gosport, Pportsmouth & Southsea, Southsea, Eastney, Hayling Island, Stoke, Havant, Bedhampton North, Purbrook, Waterlooville, Horndean (A3 P&R)
The triangular Portsmouth & Southsea Deep Level station would be a wonder to behold.....