Can't we all agree that as currently funded our A Plan is:
Already frozen for those over 25 YOS.
A very valuable and growing part of their retirement strategy for replacing 40ish% of their income for those with 5 to 24 YOS.
An expensive plan to replace ~20% of their income in retirement for those yet to be hired.
Now you tell me how we treat everyone equally with some new plan that divides up the same pot of money.