I feel like SSG is generally very generous with their gifts to the playerbase, but I want to offer a suggestion from another game.
In this other game, when there is significant downtime either via server maintenance or persistent gameplay issues such as the lag we're experiencing, they would give some form of compensation to the players. This would take the form of various in-game resources as an essentially "we're sorry you're experiencing this, here's something to try to make it up to you".
Those gifts always made me as a player feel better and it helped mitigate the feeling of 'missing out on progress' due to the game not functioning. I don't know the exact form this would look in DDO, but for example, I know I've been in groups crippled by lag with people upset that their experience elixirs were running. Like a coupon code for some extra experience elixirs would definitely make those players feel less frustrated by the situation.
Now I say all that knowing we just got a free coupon code with experience elixirs in it (which like I said, I do feel SSG is generous in this regard), but I think if they tie codes specific for server/gameplay issues, it would assuage at least some of the frustration. I'm not offering this suggestion because I even really want free stuff, but just I know how this tactic made me feel in a different gaming environment and it definitely helped player/developer relations.