Yes, I must agree on the difficulty of combat at early levels (1-3).
I do find it interesting that at the low levels you are REALLY punished for fighting an enemy even a single level above you. I've had upsets mind you...
For some reason, DOS 1 uses linear progress.
In last patch, they highlighted that progress is now even more steep.
This designer's idea has such a result.
Level one receives about 20% power progress to level 2
Level two recevies about 18% power progress to level 3
and so on.
so on the level 20 you get about 1% power progress.
Becouse of linear progress, your gain is still the same amount.
Why designer follow this weird idea is mystery.
Unfortunately, result is that low level adventurer could easily meet OP opponent. Even one level is big chunk. That is design flaw. I am not sure if they want to make it more natural. Like change progress exponential. So difference of power between levels would be similar whole game.
Same wierd selection is number of xp. Lowes possible chunk of xp I have seen was 150xp. Why ? Why not 1 xp ? Why do I need 145781234 xp for 18level ? Natural numbers are infinite and today PC can handle even more, but how a brain of average player process such a message? ... well, my brain just stuck on 3rd number of a long integer.

I think they have prepared a lot creatures already, changing this system to more acceptable is very expensive idea.... . :-/