If you get new weapon skills...

[Ouch!]

I'm just saying that they already are requiring WotG to play Abyssea, and WotG doesn't have an endgame event (though Echoes might be it), so why not make it free? The add ons left a bad taste in my mouth because I was really expecting for $10 each something of the epicness of the main expansion storylines. Instead for $30 we got not even half of what we got for $20 in ToAU or WotG.

You must also have Rise of the Zilart to do Abyssea. Maybe they should have come with that expansion. Given that Abyssea and WotG content are being developed concurrently, I'd also imagine they have different portions of the dev. team working on the different projects, which would mean each has its own associated costs.

I'll concede the point about the previous add-on scenarios. They were rather disappointing considering.

Edit: Side note, people are .dat mining the update Square Enix put up last night. Revealing a number of new enemies (mostly reskins) and weapons. As of writing this, confirmed abilities include a new tier of waltz, libra, two WHM spells (one looks like a protect/shell hybrid), eight BLU spells, and tonko: san.