Ordinarily, this would equate to an extra ~30 minutes of time spent at the end of the week, since I’m usually pretty close to 150 PvP wins after doing a weekly seals run. Also note that some of the more… for lack of better word, annoying events like “hunt a troop type in one specific mode” where it was nearly impossible to make steady progress sometimes will no longer be a thing (but treasure hunt still will be, much to the chagrin of many people). Overall, I think this version will end up being preferable.
After the introduction of raids, though, I’m going to have trouble finishing either seals or the event if I intend to play every raid battle to the best of my ability. Regardless, I like that the rewards are available, even if they might are out of reach for me personally - the games reward structure needs enough stuff to do where a casual-but-dedicated player (say, <1 hr per day avg) has enough stuff to do before reaching the rewards softcap (in this case: daily dungeons > PvP t1 > normal guild tasks > 1500 seals > event, all which can be completed within the 3 hour mark of the week, + guild wars for another 90 minutes). The danger is raising this softcap too high, where you drive people in the casual range into burnout range because they don’t want to “leave rewards on the table”, since the game has conditioned them to be able to get them all already and that we need every single tiny fraction of resources given to advance collections.
tl;dr: Raising the bar a bit will work out long term, but they could have picked a better time to introduce it.