In either case, these issues aren't overlooked, they're previously addressed. In fact, you arguments suffer from the uniting flaw that it completely neglects solo. You want monsters that are harder to for groups in the normal field, you do so at the direct loss of solo play, and at the direct neglect of enemy strongholds - which are developed specifically for group play.
he not talking about making it harder but anyfight should last longer than a weapon skill combo. short fights like we have neglets gameplay mechanics by not using anything but trying to attack a mob before it dies. there no point for to even buff up because of that and also makes it where having a future debuffing class useless.