Given the amount of work that's been put into the 442s (retractioning, interior refurbishments etc.) I doubt there is a will to abandon the project now in favour of modifying yet more stock.
Lack of gangways on the 360/2s also means they wouldn't be massively suitable for SWR's long distance work. Ascot - Aldershot / Guildford - Farnham wouldn't be a terrible prospect, though they'd need to be configured with ASDO if they are not already - Camberley, Frimley, Ash etc. are only 4 car platforms.
One prospect I'm not sure has been discussed here is the 350/2s or 360/2s going to Southern. Obviously GTR are still running quite large numbers of ancient ex-BR trains (313s / 455s) - the Desiros would be ideal for middle-distance Southern work, bumping 377s onto metro / South Coastway routes. 350/2s were also under consideration for battery operation, which would be potentially useful on Ore - Ashford / Oxted - Uckfield.