They'll probably remove myth, just because I don't think they want us to have to juggle 3 different types of tomes, and with a new tome the relative value of soldiery and myth if they kept it would be lowered, meaning they'd have to ramp up myth acquisition even more! As was stated, ilvl 90 gear was already moved over to Allied seals and is faster to obtain that way (usually). Other odds and ends can be transferred to soldiery/ allied seals/ GC seals/ drops/ other venues. Personally I hope they put myth mats in the GC and move the current GC crafting mats into gathering.