It's a bit more than 'alleged' difficulty if you're asking for simplifications for job mechanics that you're struggling with. You can just come out and say that you're finding it difficult.

The reason why an auto-combo doesn't work on the final step is because you're reducing a four combo system down to a two combo system. That's not the point of the job. My recommendation is that, now that you've levelled it, you can go ahead and park it on the shelf and find something else that's more your jam among the rest of the jobs that you've levelled. Not every job is going to resonate with you, and sometimes you're just not the target audience. It's a bit like asking cast times to be removed from BLM because you're used to having more instant casts on PCT or SMN.