I don't think there will be postponement again (at least I hope not),I mean Yoshiki already made a public apology for previous cancellations,I just don't think he will go through that again.And Taiwan live for example was one proof that they really serious this time,cause I was once skeptical that concert would happen since they already did 2 concert on Tokyo Dome in the same month,but as you can see they managed to pull it off.
and about Bangkok,maybe Yoshiki still find a way to planning it,so don't worry,let's just hope for the best xD