Other options to consider now that the factionless is a forced thing, not a self-imposed thing. (haven't played yet)
- Factionless faction chat - Sounds a bit silly when said like that, but factionless should be able to talk with each other.
- Radio (with item or just by activating a code in the chat) to communicate with anyone, not just your faction (you can disable reception ofc)
- Already existing group providing help to noobs/maybe recruit them at some point.
- Neutral areas in which you don't/can't fight, but meet people from other factions/factionless.
But IMO, the problem is that there is only one way to access the base. There should be various alternative suiting various kind of players. (level, trophy, reputation, money, quest etc...). Those should be reachable in a few hours, but not in a few seconds. But, in the meantime, noobs should be able to communicate with someone, especially in a few months when there won't be several noobs arriving at the same time.