Gil wise, I don't see what the problem is for new players. Everyone's gil from 1.x has been slashed DRAMATICALLY. Those with characters coming back have one tenth of our original funds. Also, there will be many MANY more gil sinks now. There wasn't so many in 1.x Housing, something that won't be a major factor in the game will be pricey. I am also sure there will be many MANY more gil sinks in 2.0 as well.
Gear wise, unless you want dated gear which is stat-less or the White Ravens, you aren't missing out on anything there. There are so many NEW pieces that we're all (everyone, legacy and non) excited to get our mitts on them.
So, either way, I wish the best of luck to those who choose to start on Gilgamesh. Just please do it because you want to start there, not because of endgame reasons. Endgame will always change and get easier as the game progresses. Endgame is not always RP. Endgame is content grinding.
That is all.