Hi gkcgautam,
Generally I agree with you, but.. :)

Always there is an extra zip with the differences, between the carrent and the older ver, that helps a lot. You only have to check exactly what has change.

I know if you have many modifications it is little a bit chaos to make the upgrade from one ver to the next.

I had many many difficulties in the beginning because i had another problem to solve, as my site is in non latin language. (This have been solved now but it was a great headache see more for me for many years :( ).

Any way i have to say that day by day this platform is getting better and better, believe me because i am with boonex from the "ancient days" of ae.
I am trusting them because they are trying hard :) and getting better and better also the support not as support but as real helpful persons are never refused to give me there "lights" in any problem i faced and ask for there help. (Specially Alex).
So be patience :)

Friendly
M.