Plenty of spires to farm at right now anyway, at other Titans. Removing Oya from the picture won’t change that.
… and please tell me how the more dangerous Titan environment(if Thargoid AI isn’t derping out and scanning open spots of deep space) is more “boring” than slaughtering hapless Thargoid transport craft which have literally no weapons, move at a snail’s pace and fire off an anti-Guardian field alongside their single EMP? (This is at least partly a genuine question… I cannot for the life of me understand how slaughtering a practically defenseless opponent over and over and over is considered fun after the first few times.)
Group coordination to minimize the anti guardian fields can be quite a bit of fun

! And there are lots of scouts around, busily firing, and also Cyclopses! And before you can properly start, you have to deal with the thargoid ground forces somehow, on the ground or air-to-ground .. and the atmosphere and graphics at spire sites are great. At least for me this is a quite good mixture!
You are right, the Titan environment is more dangerous, but once you have arrived there, the game mechanic can be a bit more cumbersome at least in solo mode, to only repetitively run the vent circle and then engage the core, nothing else.
But I do not want to mess around in distant spires of other titans when there is quite a time pressure to assault Oya directly. Maybe I am just missing group play at the Titan ?

it was very often bugged when I was not in solo, it is maybe once again worth a try.