Before we get some exact numbers on how a merge would convert the existing economy on the server i can't say yes or no, personally.
I would love more players online, but if everybody brings 2k + gold ( i know 2k aint much for many people, but if 100++ players rejoin the server, the gold mass is just gonna be insane). The same goes for materials.. If we get a lot of mats on, the prices will drop, and if the amount of gold is inflated, it's gonna be next to impossible for new players and people who only just ding, to get enchants, items etc.
So to sum up, i have some concerns, but if those can be handled in a manner that everyone can agree on, then i'm more than up for a merge!