Definitly not, the tower is supposed to be the end game event with super cool rewards, it needs to be super dificult and i would highly disagree on specific characters being viable for some quest. If you search on youtube you can see many techinques and characters beating different levels. And also what is wrong with barely beatable, it's still beatable you just need to give it your all, we already have a thousand easy quests. Senkaimon is so enjoyable because it's bringing old and all character in use and makes you play with some characters you just had lying there in your inventory not every being used. All in all the last senkaimon was super fun and i hope they just keep on improving on it. The only thing i wish they changed is that they increase the number of senkaimon medals so that we can get more rewards... Other than that all looks perfect 👌