I have been working on a new KDF recruit and some of the rewards are decent, like a set of personal ground and space traits. Plus a Starship Trait. I think it's the personal space trait which offers extra crit.
As for getting a Bat'leth to maximum level for 2,500 melee kills...meh. I'll unlock that when I do. I know there's a Reddit thread out there about how to accomplish this not only relatively quickly, but do so whilst doing anything but actively playing the game, but I won't say anything more about it, nor provide a url to it, because it seems like the kind of thing one might potentially be banned for.
Speaking of exploits, if you go to Kobali ground and use the transporter from/to the Kobali city through ANY of the transporters, you get a 25 dilithium container each and every time you do that. So, bug? I am pretty dang sure it is. Still I'm not going to take advantage of that, because it's one of those things which would -certainly- cause one to be called to a meeting with Mr. Ban Hammer. That is if you do it enough times.
Something else that's a bug, but not an exploit, is if you unlock the things in your KDF Recruit's transponder, some of the associated reclaim rewards can't be opened by another toon. You get the boxes for the rewards when you speak to your temporal op of choice, but you cannot yet open them. So that'll be fixed eventually, I would hope.
Aside from the glitchy, buggy, Bethesda "It Just Works" type stuff, I did find working on another toon to be rewarding in a way. My wife started playing the game not too long ago and for the first time we had a reason to run episode missions side-by-side, at least the few here and there which can be completed by a team. Lots of laughs were to be had. Some of the voice acting and character expressions are just too funny. Particularly Hakeev. I have to say, it was a somewhat nostalgic, yet also hilarious, treat.
I am liking the anniversary event itself in a way. Lots of choices for missions or queues. It's not just doing the same bloody thing day after day, at least.