People keep mentioning field content because they know SE is capable of implementing that. With some issues, yes, but they have done it in the past.
The alternative would be wishing that SE invested a lot of dev power into revamping the open world and designing new instanced content, but hoping for it to happen is kinda optimistic now.

Also, Lost Ark combat is boring as heck too. The character/skill development system is very good and is something SE should take a closer look at, but the combat itself is pressing stuff that's not on CD.