There are extra voiceovers and dynamic images (and maybe the cinematics as well) in Sole Survivor other than Tiberian Dawn. For example, Weapon upgraded, Range upgraded, Armor upgraded, etc.. So it's worth to rip-off/upscale or remake the assets from the game.
There were several voice sets for that, too... but two of those I know were voiced by Kia Huntzinger (as EVA) and Frank Klepacki (as the Commando), and both of these people are part of the remaster project.
But, honestly, at this stage in the remaster's development, I think it's a bit too late to still add that stuff in.
