I have an idea for zos for pledges, it might seem stupid or silly but i think it would be a great idea, why not have the solo dungs as dailies and have them scale to an undaunted lvl what do you think
It would be interesting, but there are no solo dungeons, so it wouldn't be possible. The only solo instances are one-time-only locations visited in the Main Quest and Guild Quests that cannot be returned to, and they scale already.
I think it might be more interesting to release content with this purpose, like daily quests and such. I don't think it's the best idea to have both solo and group dungeon, because eventually everyone will mostly run solo- or groupdungeons, neither of both should be left out then.
Like your ide though, but I'd rather see it as content and not only dungeons, and certainly not pledges.