Nevermind just simple SRV missions getting a boost by being able to do them on foot, take it to the next level, infiltrate the base meaning infiltrate the buildings in the base. I mean, how cool would it be to sneak or blast your way through some of the highrises in ED bases get to level eleventeen to steal something? Getting data for a mission could actually doing something more plausible than scanning a data point, physically penetrate a building, breach its server room, plant a uplink device, get out without getting caught. OR stalk an NPC and pickpocket them for a data device. OR follow them until they go into a meeting room, at whcih point you use surveilance equipment such as parabolic or laser microphones to eavesdrop the meeting to get your intel. Such is the potential breadth of legs that your actions on the data acquisition mission needn't focus on the one NPC, you could bribe their neighbours to let you use thier room/office/home to eavesdrop on your target. Or you could buy a pass to the building from a janitor in a bar for a stack of credits, or call in a favour with the police chief of the station to get them to mount a search and seize operation on all the targets computer equipment to allow you access to their terminals when they are being held in the evidence room of the starport.
Or how about actually being an actual assassin, and having more freedom to chose which of various ways you use to perform an assassination mission, rather than simply taking out a nominated ship in ship to ship combat. For instance, you could board their ship and plant a bomb in their quarters, or you could watch them walking down the embarkation ramp through the scope of a sniper rifle, or you could infiltrate their quarters and kill them in their sleep, or you could sneekily stab them with a syringe of poison on a busy prominade, or you could spike their drink in a bar, or you could beat them to death in their ships hangar, or you could incapacitate them and through them out an air lock.
And what if station repairs didnt jsut require community goal / wing mission style of haul X thousand tonnes of [Commodity], but offered players the chance to sign up for an EVA mission to actually perform some of the repairs on the hull of the burning/damaged stations?