Test shard would be excellent, but given money woes that's actually something that would cost.
The items aren't a bad start, but that's far too much virtual cash they'd be giving away, and right now Trion needs cash like a junkie needs a hit. I'd expect something like what Neverwinter did when they had serious problems;
invent some kind of reskinned hat/helmet/cape thingy and distribute it to everyone in the game as an apology.
'Neverwinter' developers compensate players for rollback (Photos)



