Help !!! New Changes has upset me a little

I planned and booked all my trips before the 13th November 2016 in order to achieve Gold Status, some that I have already taken this year and a few more flights early March 2017.
However, now that the new Tier changes take effect on the 13th November 2016, it seems like I would be worst off, under the new system in order to achieve gold (please anyone correct me if I'm wrong)
I hold silver status at present and currently have 11 Tier points
I need 4 Tier points to renew silver and 18 Tier points to reached gold
UNDER OLD TIER SYSTEM
Flights that I have booked are LHR --ATL --MCO return Economy class O = 6 Tier
MCO ----MIA return First Class = 6 Tier
MCO ---- ATL --- MEM return first Class = 12 Tier
Total of Tier Points 24 I will earn and reach gold under the old Tier system and I have already 11 Tier points.
UNDER THE NEW TIER POINT SYSTEM
400 points to renew or reach silver
1000 to reach or renew gold
I presently have 11 Tier points X 25 = 275
LHR---- ATL----- MCO Trip 4 Tier points X 25 = 50 for the Virgin Atlantic
2 Tier points X25 = 50 for the Delta
MCO ----MIA Trip 6 Tier points X 25= 150
MCO ---- ATL --- MEM Trip 12 Tier points X 25 = 300
275+50+50+150+300 TOTAL POINTS 825 Under the new Tier Points System.
so I will not reach gold status !!!!!!!!!!! (I'm I missing something) I need 1000 Points
I did call flying club t explain the above and they was just as confused as I was.
The Virgin advisor explained to me that because my Mco trip is Lowest fare I will only earn 50 Tier Points return trip on the Virgin Atlantic Leg as the flight is after the 13th November 2016 regardless if I already booked before that date, so I know I'm already Losing out.
As for the Delta trips I have already booked all in First Class, the x25 may change, (possibly higher) because it is first Class, but unsure how it will pan out as time goes on, but sympathise with my situation.
Please can anyone shed any light on the above , I know I have written a lot, but it was the only way for me to break it down.
Looks like I will be moving on after I have taken my flights with Virgin Atlantic, next year.
However, now that the new Tier changes take effect on the 13th November 2016, it seems like I would be worst off, under the new system in order to achieve gold (please anyone correct me if I'm wrong)
I hold silver status at present and currently have 11 Tier points
I need 4 Tier points to renew silver and 18 Tier points to reached gold
UNDER OLD TIER SYSTEM
Flights that I have booked are LHR --ATL --MCO return Economy class O = 6 Tier
MCO ----MIA return First Class = 6 Tier
MCO ---- ATL --- MEM return first Class = 12 Tier
Total of Tier Points 24 I will earn and reach gold under the old Tier system and I have already 11 Tier points.
UNDER THE NEW TIER POINT SYSTEM
400 points to renew or reach silver
1000 to reach or renew gold
I presently have 11 Tier points X 25 = 275
LHR---- ATL----- MCO Trip 4 Tier points X 25 = 50 for the Virgin Atlantic
2 Tier points X25 = 50 for the Delta
MCO ----MIA Trip 6 Tier points X 25= 150
MCO ---- ATL --- MEM Trip 12 Tier points X 25 = 300
275+50+50+150+300 TOTAL POINTS 825 Under the new Tier Points System.
so I will not reach gold status !!!!!!!!!!! (I'm I missing something) I need 1000 Points

I did call flying club t explain the above and they was just as confused as I was.
The Virgin advisor explained to me that because my Mco trip is Lowest fare I will only earn 50 Tier Points return trip on the Virgin Atlantic Leg as the flight is after the 13th November 2016 regardless if I already booked before that date, so I know I'm already Losing out.
As for the Delta trips I have already booked all in First Class, the x25 may change, (possibly higher) because it is first Class, but unsure how it will pan out as time goes on, but sympathise with my situation.
Please can anyone shed any light on the above , I know I have written a lot, but it was the only way for me to break it down.
Looks like I will be moving on after I have taken my flights with Virgin Atlantic, next year.