That question must be asked by every cardholders or potential cardholders of themselves and themselves only.
No 2 people have exactly same set of circumstances, wants, needs and desires. One size does not fit all. I personally questioned the value of Plat Charge at $1,450 after the NSW Law Society $800 tie up ceased - I was set to close Plat as the ONLY value to me was the travel credits with Plat and Reserve - even then the sums didn't add up.
Then along comes a method to virtually double MR pts - voila I will now keep the card - we are ALL different - I can now answer to myself - YES Plat is now worth it.
NOTE: I will not disclose this method here - RTFF - all the info is there - or come along to a MEL AFF Members get together and info exchange face to face - but NEVER on an open forum - again - it's all in this forum if you read widely enough.
EDITE: And please do not PM me re this matter as they will be ignored