there is no feedback to add about the main topic of this post imo as long as you don't fix the game. it's just like putting a patch on a broken leg
anyway, i have some stuff to comment about:
-the updated bond/xp rewards for fort fights is a necessity, not a suggestion...but a clever way should be found for all the classes to win the same rewards so there are no complaints there. I would boost the xp reward at least 4-6 times. as a dueler I make bonds more than easily doing nothing, so doubling the bonds rewards, idk....but sure, wouldn't be any bad, I guess.
-a fort shop that works exactly the same way as the adventure one with the veterans points is easy to implement and i'm sure it would boost attendance...and if not, it'll at least give people something to show up for instead of "fun" which is kind of inexistent at this point (and with this occasion update the veteran point shop too - or actually make it the same currency, maybe that would boost number of players playing adventures too. but do update it)
-i'm not sure about these fort chests...you already get a lot of free stuff, what's the point? you're soon gonna ask for free premium (which is already given pretty often). although, with a new fort shop added a chest could be added to buy with "fort points"
-rewarding the battle leader...yeah, sure. and that would work together with my suggestion of changing the ranking system...if whoever's suggestion to move offliners by the leader cannot be implemented
-i'm surpsied nobody mentioned it but AWESOMIA BATTLES were something promised right after Nyborg was booted out, you dug one battle or something and after that you just pretended we never had this discussion at all. but ofc since you couldn't dig even the ones on schedule for the event...that's asking a bit much...isn't it?
-i'm gonna repeat myself until someone understands that until you don't change the defense bonus on towers with at least -5% we're gonna keep being stuck in this limbo forever until you release some op set for attack
-i would like to see a new battle map or whatever but that seems pretty much impossible so won't bother commenting on that
-despite my personal opinion that advent is just fine as it is because it is super good if it manages to ghost 5-7 times a battle (which happens pretty often if you're not a complete idiot)....the other bonuses have to be reworked. that's another discussion though, it's not fort related. (that's for all the classes, not only advent)
advent is pretty lame to play indeed but don't play advent if you don't like it. I personally like my advent that has 16k hp at lvl137 and it manages to do pretty well with only lv1 cortina (not full hp full str).
-ATTENTION TO THIS - I would add a limit to how many times someone can be critted in a round (not necessary but it would make people stop crying a bit)
-and basically if no other fix is found and you simply don't want to remove tower bonuses...find a way to make tanks hit in attack...and preferably make them deal damage too...since you messed up everything with cortina (and union)
that's it for now...if you really need advice for balancing numbers and all that, i can put in some suggestions about the worlds i play.