Lets just say you're really lucky you have the bank deposit boxes.
My reasoning behind this is because I'm assuming you're from the US since your English is good. That being said...it now costs us 1.37x more in crystal purchases than it used to be. Used to be $100 for 11050 gPotatoes. Now it is $137 for 11050 crystals. (At least that's what I've been told, I haven't purchased any since the new owners.
I still have some rolling as well and the amount of premium crystals (well CS in general) in this patch is insane.
Grinding gold is easier since gear drops instead of glyphs that sold for nothing, however, it's quite tedious.
In regards to your crystals (formerly known as gPotatos/gPots) I would suggest saving them as well as you are capable of doing. If you run out of gold you can always grind or transfer a few crystals here and there.
There are a few new mounts, carnifex scroll (idk if you were around for this), and edict of conclave.
The Spinner:
Has a target/pull/drag skill that deals damage.
Has a target/jump to/stun skill.
A very quick mount and is not slowed or dismounted in water.
The Manabike:
Has a pulse similar to the psionicist class, although there is no stun, just a knockback.
Has a firetrail skill that deals damage and slows enemies caught in it.
It has the ability to gain movement speed increasing stacks if you're going in a [relatively] straight line.
Currently this is the fastest mount.
The Carnifex Scrolls:
Green: Restores health when you get out of combat after getting killing blows. (Don't know percentage - might be 3%/kill)
Blue: Restores mana/energy when you get out of combat after getting killing blows. (Don't know percentages - might be 3%/kill/skill)
Epic: Restores cooldowns when you get out of combat after getting killing blows on mobs. (3% of a cooldown per kill on each skill. I think)
Legend:
Adds 5/10/20 willpower depending on the amount of killing blows you receive in PvP in a 10 minute time.
5 for 3 kills
10 for 6 kills
20 for 12 kills
This also offers an insanely cool vanity kill animation for when you kill your foes in PvP.
Edict of Conclave:
(Green) Page of Edict of Conclave:
If you read this manuscript, you will receive 3 defensive stat points.
(Blue) Section of Edict of Conclave:
If you read this manuscript, you will receive 4 defensive stat points.
(Epic) Part of Edict of Conclave:
If you read this manuscript, you will receive 5 defensive stat points.
(Legend) Edict of Conclave:
If you read the Edict, you will receive 9 defensive stat points.
Sorry about not knowing the exact details on the carnifex scrolls atm since I am at work I can't check.
Hope this helps!
Good luck and welcome back.