I can’t possibly imagine that the FAA is or any aviation governing body is going to jump from iPad distance learning to full on new type certificate. B737 type rated pilots will receive 2-3 sessions in the MAX simulator and be sent on their way flying 737NG and MAX variants and the aircraft will go on to have a normal safety record.
The more concerning aspect of this entire situation is finding where the system broke down to prevent this additional training to begin with and how do we fix the breaks in that system.