I'll list some threads from my subscriptions list, and some that I found with a quick search. Mostly I guess for my own fun (yeah, I know that's weird), and to see how many threads will come up without really digging in really deep. Some might find them interesting and didn't notice them before.
It's quite easy to see most of them are requesting for skillupses, and that's no surprise. There are, however, quite a bunch of other ideas thrown around, too.
Personally I don't think I have anything new in mind, none other that I didn't list here:
Basically, the ones on top of my mind I guess would be:
- Skillupses, yes, it would just work.
- Shorten the time between Evaluations (not that it affects me as I've got the Medal of Altana, twice, already).
- Re-locate the NPCs who give them Allied Tags as it is sometimes quite messy nearby them Fortifications which makes the process frustrating, especially if you want to join a Union, which has a few second delay for whatever reason between one of the options and even more frustrating will be getting Temporary Items.
- With that said, how about distributing Temporary Items in the same manner as in Besieged? There could be some sort of a payment implemented where you could choose either to have them or not have them and with a Medal of Altana, you would of course get them for free in any case. Perhaps the Medal one possesses could define how many/which items one would get. Oh, the possibilities...
- Adjust Fortifications, seriously... I'm sure there is something that can be done, if the EXP/LP yield can not be raised. I understand that one doesn't want players to just whack-a-wall for points, be it AFK or not, but yeah, this needs to be dealt with.
- Move the NPCs dealing with Sigil closer to where everything else is. For example, in Bastok, you have to run all the way to the exit to Port Bastok/North Gustaberg [S] to get the Sigil, and perhaps other items, and then all the way back to warp to a locations. Same goes with if there is a battle in Bastok Markets [S], and you run to get the Allied Tags, but forgot your Medal has expired. It's a very trivial issue, yes, but very annoying to have to run back and forth that much. If the PS2 memory resources are limiting the NPC amount around where the OPs and Warp NPCs are, then, move some of the other NPCs away as there are many that are not used at all.
- Make your opinions that are delivered to the leaders matter. I have a feeling they do matter, but no one really notices it and this, they do not give their opinion to them at all. Give some points for it, or have it really make a difference, that everyone can notice, especially now as not so many players are doing Campaign in the first place, this could be helpful. Though, seeing how little people are taking interest on Bastion, which has quite awesome effects to everyone in the area, the effect(s) would indeed need to be quite drastic.
- Auto-Reraise wouldn't probably be a bad idea, especially since the NPCs will Warp away immediately after a fight ends. I can't really think of how that could be abused, even...
- Enhance the Livery gear so that they boost your movement speed more, and in more areas, perhaps all the areas within allied-control. As a side-note, still haven't really noticed the other enhancements of them do anything...
- Add more useful gear, or ways to upgrade the old.
Oopsies, in the end, I could probably go on for quite a while... In general, I just wish this would not become like any other event that has been left basically alone by the players, being just a speck on the memory-lane, wasting space and server resources. It's a great system, and I've had some of the most fun times in the game while doing Campaign. It could be expanded upon, and renovated for the players of today in many ways, I'm sure.
Many if not all of the things mentioned have been indeed asked for quite a few times with only one vague'ish reply from the developers from 05-28-2011, that I could find without digging deeper:

Originally Posted by
Camate
Comparatively, this type of adjustment is rather high on the difficulty scale. The development team can't make any promises at the moment, but they did mention that they will look into this further.
Would be nice to get an up-to-date opinion on that.
I'll list some of the related threads now, so that they have a connection to the (currently) most up to date thread, a sort of a compilation, if you will.
From a span of almost a year, I guess that's not so many, and perhaps most of them are about the same things. That alone should mean something!
Just some thoughts~