(2) To provide additional or revise existing limitations or restrictions on the right to qualify for a retirement benefit based on involuntary separation from employment.
(c) Any law enacted by the General Assembly pursuant to subparagraph (a) or (b) of this Paragraph may affect persons who are members of public retirement or pension systems on January 1, 1985, and who became members at any time prior to that date.
(d) Any law enacted by the General Assembly pursuant to subparagraph (a) or (b) of this Paragraph shall not be subject to any law controlling legislative procedures for the consideration of retirement or pension bills, including, but not limited to, any limitations on the sessions of the General Assembly at which retirement or pension bills may be introduced.
(e) No public retirement or pension system created on or after January 1, 1985, shall grant any person whose retirement is based on involuntary separation from employment a retirement or pension benefit more favorable than the retirement or pension benefit granted to a person whose separation from employment is voluntary.
