4 seasons seems spot on to me! To look down on the whole thing, to say we're now at the halfway point seems really fine.
Think of what could come between now and the final finale...
- Finding out everything about the Others, Dharma, Widmore
- Rescue & Possible Aftermath Episodes
- Confinement to the island for the rest of the survivors whole lives.
- More progress on the Michael / Walt "getaway"
- Finding out what happens in the Sawyer, Jack & Kate triangle..
- Finding out what the smoke monster is all about, the polar bear and other strange happenings. Finding out for sure.
- The Claire & Charlie thing, plus the psychic Claire saw, his involvement.
- The Sun & Jin baby situation
- Eko's brothers plane ending up all the way over there
- Jack's dad, where did he go?
These are a mixture of important & not so important things, but I'll put me neck on the line here and say I'd expect the writers to wrap up most if not
all of these mysteries & dilemmas.
From the beginning of Lost uptil now, I personally feel we've learnt less in the first 2 seasons, than what we'll surely learn in the final 2 seasons - therefore... I am excited