no they will always be there. godfest just gives them 3x drop rate.
ya asano you just saved urself a huge headache of having to farm all of those.
the chinese gods are really not that bad, they are pretty easy to use. I would pick one of them that you have the best subs/orb changers for and use it as your main damage team. it is a high burst team but requires some orb matching skills to use. tho after awhile 3x3 isnt that hard to pull off...if they are there.
cu chulainn is another good team. it is 9x damage (chinese gods are 12x) but you dont have the orb changers to really make it a good team. once you do its a really good/safe burst team.
asteroth is a good leader. if you have devil subs and pair it with another asteroth then you will have really high HP and RCV. It will be your slow but steady safe team.
and Vritra is good with a zombie team, anytime you run one just bring him and use the skill when ur at 1hp.
overall you got some good leaders. both a burst and a safe team. just pick which you want first and start to lvl it.
all the teams work best when paired with the same helper as ur leader so use the friend finder and add some.
http://www.puzzledragonx.com/en/friendfinder.asp