AFAIK, there are 2 routes we can choose towards the path to Naturalization...The Single Route or the Married Route...If you're Married but did not apply for the JFRV, then you will have to go the Single route & need to do the PCC. The reason why JFRV holders do not need a PCC is because they have already done it during the JFRV process.
I don't think there's any way your mother can sponsor you to live permanently here in Taiwan (or the other way around) ...Your only option is to work legally here for 5 years on a continuous ARC and then apply for an APRC/Taiwan ID or get married to a Taiwanese and apply for the Taiwan ID after 3 years.
Once the pre-naturalization certificate (officially referred to as the "Quasi Naturalization Certificate") has been issued to you, then you will be warned by the HHR official NOT to travel outside Taiwan as doing so will require you to get a new PCC. Unless you have received the Certificate of Renunciation from your Country, you're still its Citizen and hence your passport is still valid but then again, it is highly advisable NOT to make any unnecessary travel during this period as any travel AFTER receiving the Quasi Cert. will require you to make a new PCC.
Once you have renounced your Original Passport and become Stateless and have successfully received your Naturalization certificate, you will get your TARC (Taiwan Area Resident Certificate). With the TARC, you can apply for a Taiwanese passport and leave the country but then you will need to wait 2 years to get your Taiwan ID as opposed to the 1 year for those who haven't left Taiwan. I'm not sure what procedure Myanmar citizens have to go through but I do know some countries do not allow you to renounce unless you have proof of Citizenship of another country...in this case, you are waived from providing a Renunciation Certificate.
Ohh...only about 3+ mths to go before I get my Taiwan ID ...Woo Hoo!!!