whats wrong with Indian Team?

another major event, another buildup, another dissappointment.
Since that glorious june evening at lords in 83, i have really started my cricketultraloyalfanhood (a new word). Its been always the case of ending up disappointed : 87 thanks to gooch and some idiotic batting in semis, 92 was no hope, 96 due to turning eden gardens, 99 again no hope, 03 atleast in finals but a great innings from ponting, 07 was disasater. even in champion trophy thanks to dada's team, we went till finals twice but best we could do was to share. 04 and 06 we were out before semis.
With inaugural T20, i thought my curse has ended with a lucky, down to earth and dynamic leader in dhoni just like kapil. add to that were dream run from australia, srilanka, england, NZ, not to mention IPL. There were few blips likes tests in lanka and asia cup final where we were mesmerized by mendis. But we were on track.
Now after second t20 disasater, comes CT disappointment.
What can be reasons
1. Backup strength is negligible with sehwag, zaheer, yuvraj out.
2. Over reliance of SRT. (have just studied that SRT had a role in each of above victories since ICCT20 in 07 except maybe in lanka08)
3. inability to handle pressure
4. pathetic fielding
5. Inconsistent Bowling.
6. vague tactics (sending virat ahead of himself against pak. loss against pak hurts)
bowling weakness hurts us most. also we have seen IPL performances mean nothing for justifying selection. there is class apart.
i think we need to plan world cup11 carefully. no scheduling of meaning less matches so all team can be fit. bowling selection needs overhaul. put great work on fielding.
but still i am putting my fingers cross for WC11