Beyond that I think the second option should give +3 Actions. Otherwise, if you have 2 of these and play the first as +2 Actions and the second as +2 Cards, you will have ended right back to where you started (5 Cards, 1 Action). With +3 Actions you could play the second Ferrier again and end up with 6 Cards and 1 Action. Essentially you are rewarded a Laboratory play for pairing the 2 Ferriers.
I think you missed that the second Ferrier that is played for draw always comes back to your hand. So 2 Ferriers net draw one card (+2 Actions, +2 Cards, Ferrier comes back to hand) whereas 2 Ferries of the +3 Actions version net draw 3 cards (+3 Actions, +2 Cards, Ferrier comes back to hand, +2 Cards, Ferrier comes back to hand). This is clearly too good for $4.
I don't know how good the +2 Actions version is and whether it is too weak at $4 (it definitely looks weaker than Asper's Town/Road) but I guess that it can be used as "half-Lab" in a mono-card strategy as we just analyzed but also as consistency-increasing sidekick in a draw engine.
Here is my INFINITE CHALLENGE SUBMISSION:
This is a great idea! Not that this is a surprise anymore when you come up with a new card.
I only fear that Lost City for me, VP for the others is a bit too weak. My totally uneducated hunch is that this would be OK if there were 1/2 VPs.
On the other hand it makes perhaps more sense to read this as a cheap $2 cantrip with a bonus for everybody that you only want to use a few times, during crucial moments.