I too wish they published the list of tasks earlier on in the event.
Overall the event was Ok this season.
From my subjective perspective (with Premium Pass):
Pluses:
-The free loan player was a good addition and I was about to buy a player for that position;
-The 5.5 * Academy player is a good addition for next season
-I got a 7* MR/MC which I will keep for at least the following season
Minuses:
-The price for the free loan is too high considering the star drop at the beginning of the new season, so I won't keep him;
-The tasks released later in the event are a bit over the top: the 150% and 130% respectively, but also the assign 2 coaches in Youth Academy (already had one task to assign 4 coaches), also the buy two 96%+special ability task;
-Even if I manage or choose to complete some of these tasks (I do have two players >130%) and assigning 2 coaches can be done, the incentive to accomplish them is very low for me: I do not have a player that would make use of the Intercepting Specialist ability and I do not see any use in the 20% faster recovery, as the season will soon be over anyway.
I don't say the difficult tasks shouldn't be there, it is somewhat normal, with a strong emphasis on the word "somewhat", but the order of the rewards is a bit messed up in my opinion.
The event however is a good addition to the game and I am surely looking forward for the next season's format, if there will be any improvements.