my opinion (ofc no one has to agree with me but yee) 1. Powers only in Natlan This is quite subjective. I personally love it that Natlan characters are only amazing in Natlan, because that means the other characters dont get necessarily "exploration-crept". The only thing i feel like should be done is make the trial section NOT in Natlan. Its misleading that the trial for the characters are in Natlan, and newbies who doesnt understand the mechanics think their duration is that long. Also, even outside Natlan, these characters are actually already "exploration-creeping" others, namely chasca and wanderer + xilonen and kirara. Its obvious who is better between them in terms of exploration. 2. Nightsoul Blessing mechanic only special for Natlan characters I feel like it has always been this way. 1.0 was the big DMG meta, 2.0 was the elemental burst meta, 3.0 was the dendro meta, 4.0 is HP manipulation meta and 5.0 is.. well Nightsoul point meta. Obviously not all artifact sets will be able to be used to everyone. This one has always been the case, its just the Natlan artifact sets and mechanics are much more specialized (even though they tried generalizing it with the "Nightsoul burst" mechanic. 3. Powercreep Honestly? No. None of the Natlan characters are powercreeping and none of them are below average. Their damage is enough and in some situations better, but even Xilonen doesnt neccesarily "powercreep" Kazuha. They both have different usages depending on which one you value more between crowd control and healing. Xilonen can definitely fit in more teams though. The power level in Natlan currently is quite balanced imo. But lets see mavuika cause people said shes much stronger than Arlecchino and can actually replace Xiangling in alot of teams. 4. Constellation powercreep Now this, i feel like is an actual thing. Kazuha at C0 is objectively still better than Xilonen due to his damage being boosted by EM too and his Crowd control being insanely good (with the cost of Kazuha not being able to buff Geo teams). but with constellations, Xilonen actually far surpasses Kazuha, especially her C2. Even though the "constellation powercreep" is a thing, i feel like its always better than having powercreep for all (like chiori and albedo). The only problem i find here is how predatory the characters are if their powercreep is through the Constellation. Im afraid you will need those constellation to clear future content (which is unlikely) but is still a probability
my opinion (ofc no one has to agree with me but yee)
1. Powers only in Natlan
This is quite subjective. I personally love it that Natlan characters are only amazing in Natlan, because that means the other characters dont get necessarily "exploration-crept". The only thing i feel like should be done is make the trial section NOT in Natlan. Its misleading that the trial for the characters are in Natlan, and newbies who doesnt understand the mechanics think their duration is that long. Also, even outside Natlan, these characters are actually already "exploration-creeping" others, namely chasca and wanderer + xilonen and kirara. Its obvious who is better between them in terms of exploration.
2. Nightsoul Blessing mechanic only special for Natlan characters
I feel like it has always been this way. 1.0 was the big DMG meta, 2.0 was the elemental burst meta, 3.0 was the dendro meta, 4.0 is HP manipulation meta and 5.0 is.. well Nightsoul point meta. Obviously not all artifact sets will be able to be used to everyone. This one has always been the case, its just the Natlan artifact sets and mechanics are much more specialized (even though they tried generalizing it with the "Nightsoul burst" mechanic.
3. Powercreep
Honestly? No. None of the Natlan characters are powercreeping and none of them are below average. Their damage is enough and in some situations better, but even Xilonen doesnt neccesarily "powercreep" Kazuha. They both have different usages depending on which one you value more between crowd control and healing. Xilonen can definitely fit in more teams though. The power level in Natlan currently is quite balanced imo. But lets see mavuika cause people said shes much stronger than Arlecchino and can actually replace Xiangling in alot of teams.
4. Constellation powercreep
Now this, i feel like is an actual thing. Kazuha at C0 is objectively still better than Xilonen due to his damage being boosted by EM too and his Crowd control being insanely good (with the cost of Kazuha not being able to buff Geo teams). but with constellations, Xilonen actually far surpasses Kazuha, especially her C2. Even though the "constellation powercreep" is a thing, i feel like its always better than having powercreep for all (like chiori and albedo). The only problem i find here is how predatory the characters are if their powercreep is through the Constellation. Im afraid you will need those constellation to clear future content (which is unlikely) but is still a probability
No.