Why would they? The make LFS because it allows them to work without these 'teams'. As soon as they employ more staff the whole reason to make LFS stops instantly.
Things change of course, and Scavier might change their mind on the matter, but as it stands I don't see LFS becoming a bigger team. It's a 3-man indie project and will almost certainly always remain so. If that doesn't give results you enjoy then move on. There are always big team, mass market games to play like Gran Turismo that have all the fancy stuff you crave.