More changes to Deep Dungeon Solo?

Over the past few days, I've been trying to earn the title for completing Eureka Orthos solo (I decided to start with this one). After a few attempts and practicing with the bosses, I managed to reach floor 94, but due to a careless mistake, I died. I'm not sure I have the strength to start over again, and I'm disappointed, since I've now had a lot of practice up to the upper floors. Would you be okay with allowing for more checkpoints in addition to the story one they just added? Or do you think the DDs should stay the same?

What other changes would you like to see for solo runs?