I played FF XIV 1.0 when it first came out as a casual player and invested 20-30 hours to get my THM to level 15 and a few crafting levels in Alchemy and mining.
Looking forward to 2.0 coming out, I hate to lose my progress when I could keep it, but it sounds like there may be a disadvantage for me to be on a legacy server as opposed to starting over. My concern is taking another 20+ hours to get back up to level 15, unless the speed of leveling, at least for the lower levels, has been increased in 2.0
I hope to have 1 week that I'll take vacation to invest a lot of time and then I'll go back to more casual and want to get the most out of it.