I discovered and know why I love isekai like El Hazard: The Magnificent World, Monster Rancher, Digimon Adventure (even 02, Tamers [when they go to the digital world in the second half], and Frontiers) so much. They have something many modern isekai lack: a sense of actual wonder, discovery, and most importantly, the adventure itself. Many isekai today are just too corporate driven and copies of a copy, copying another copy that's ultra derivative. Nearly everything else feels flat, all glitter, no soul, or is just another lame and cardboard cut out harem with nothing else going on. I'm watching El Hazard: Wanderers right now on YouTube (I just ordered the blu ray on Crunchy roll for $25), and even it still carries those three important aspects I listed, even though the anime is on a cheaper budget.