I don't do coil but I don't think sands of time should be soldiery based that's a little too simple, maybe some quest line on a weekly reset like the primal focus quest. nobody complained that anybody using the primal reward weapons were not as good as coil goers because garuda, titan, ifrit extreme wasn't a joke back then some even suggesting titan ex being equally difficult as coil turns 1-4.

I feel disappointed in this patch 2.2-2.4 that there hasn't been any outside of coil difficult objectives (mog, levi, ramuh, much simpler than titan) but this is also reflected in the fact they only reward i100 gear.

I don't do coil simply because i cant static no matter what. When one day you work from 1pm-9pm and the next your working from 9pm-5am or you have Monday Tuesday off one week and Friday, Saturday the next i just simply avoid doing something that would cause stress.