What are the number of theory exams, flight tests, medical examinations, to be completed?
14 TK exams, but if you have 1000 hours multicrew you are exempt formal training. However, this would be a BIG mistake.
1 flight test, plus any type rating issues. If you are current and have 500 hours on a machine they will grant you a type rating with just an LPC. Otherwise it will be a full type rating course.
1 medical exam
Which is the best EASA member state to do this in?
Probably the UK, but the IAA (Ireland) are also worth considering for future licence issues. You would likely have to do the medical there though.
Has the process become easier now that CASA issues Part 61 ICAO licences?
Probably not
Phil