It is a very bold issue to want to get involved with. Before Thailand can be considered as a banking hub a few issues would need to be addressed. For example the attitude towards scams needs a serious looking into. Right now if you give information to a bank regarding scams they do nothing. This is not a good approach if the country wants to be a banking hub.
A bank I used to have in the Netherlands, now long closed, advised against having any bank in Thailand as the way the security was at the time meant anyone could pretty much take anything and would be almost certain to get away with it. Thankfully, since that time things have improved a lot. However, sending money out of country or bringing it in, is still not very easy I would doubt if anyone would commit their life savings to putting it all in a Thai bank.
Could be good if the many issues surrounding the Thai banking industry can be resolved and tightened up.