I don't think sets and seasons are, at their core, a bad idea but I do believe that they were not well implemented this year.
We have to face facts as players.
They are never going to have enough unique players in the game to cover 6 sets without a large number of repeats. We can all say "Go sign more legends." but history shows that won't happen.
Going back to the old method is going to mean they go back to their practice of ramping up their overalls throughout the year to keep it interesting. We'd go back to 85-87 in the first month, then 87-89 the next month etc.
There will be some large group of players who will always be dissatisfied. That is not a new thing this year. It is kind of arrogant to think that my ideas or your ideas to improve the game is going to be well received by all players.
In the end what really matters to SDS are their metrics. They should have the metrics to judge how well the game is or isn't doing this year compared to previous years. Are players staying engaged, are they completing programs, taking part in Ranked Seasons or events, are they completing collections. Are they spending their stubs? Are they buying stubs? Are they buying packs? Those metrics will be the determining factor on the future of sets and seasons far more than complaints on the forum