Sooooo, you want a chance to have more IFTs? Just say "I'm In" on NSurf9's thread and give your commitment (no money now, just your commitment for it) and your wish may become a reality.
No returns in the G fund and frozen on that nice round not-green lilly pad? Need more IFT's to negotiate exposure in equities?
I'll be setting up an appointment this week with the Rose attorneys in DC to get a lawyerly answer or memorandum of law and likelihood of success on that very issue - a few more IFTs, later trade time, option-out window through TSP with your funds (keeping your TSP account open to receive your contribution and matching funds, and periodically roll over) to a mutal fund, IRA (self-directed) etc.