I will say that I am very excited for the new changes, with one exception. I want my damn finishers. I know the ones we have unlocked will stay, but I'm only at Bambi right now and will not have time to get to my longtime goal of bear. So that is a HUGE bummer. Oh well, once a Bambi always a Bambi I suppose
Whoops, I'd meant to change Flameseeker Prophecies to Predator. FSP was one of the other legendaries I'd considered, but much like the others, shield isn't a very useful weapon. On my warrior I use warhorn or axe for my off hand, and for my guardian I use focus. And engineer would be doubly bad, because I'm almost always using a kit, and FSP would look out of place on an engi. Juggernaut is aesthetically and functionally great for both warrior and guardian, though; it's just a matter of picking which profession I'll use it with.
And really, unless you're doing dungeons or particularly difficult events I'd say you can still get away with using mace for your guardian. PvE is by and large very easy, and it can be fun to play a defensive/supportive setup in events like temples and such. I'd say go for it anyways, just be prepared to switch to something else for dungeons.
Shield not useful? What what what?! I suppose for PvE shields can be very situational for pretty much all classes, but shield is AMAZING for WvW and S/TPvP. I don't care what you bitchy Guardians say, I like to use a shield in WvW...with a mace some times. I'm almost done (need 100k more karma) with my FSP... dat glow.
Also, to post in regards to the OP, make whatever you like the most. Seriously. It's a lot of effort and time to make a legendary (unless you gemstore). If people don't like that you're running a mace build in PvE then put a GS on and while they're not looking put your mace back on. Dungeons are so easy now that everyone is geared and most people know the fights that it really doesn't matter what weapons you use.