I think the bakerloo line could do with some battery trains, I think it would make it a lot more interesting. Who agrees? for example the L43 or L40 lite this one here, however i think these mainly operate on the metropolitan line
Yes and I think the Brighton Route could do with a Diesel Train... Can this thread even count as a suggestion?
Do you mean a battery electric locomotive like this one? L63 dates back to the 1980s it's probably stored by London Underground inside one of its Depots. Possibly Stonebridge Park or London Road
Although I quite like the idea of a battery train, the huge downside of this particular suggestion is that 1. It's only really used on one particular route 2. That route is mostly underground (and thus certainly not my favourite)