Lets start this out by saying I play a PVE Marksman sniper, I do not PVP so I can't really comment on that aspect.
1) in FP and world content we're regarded as a very powerful and useful spec, one shoting weak or standard enemies, burning through strong enemies in a couple of shots and taking out large groups of enemies with an orbital strike. OPS groups are starting to see us as less and less of a resource they want to have though, we do good dps, but it seems everyone else can do it better now. we are quickly being passed by Lethality snipers, and even engineering can do the same or higher then us now.
2) I chose sniper to play a hard hitting ranged combatant and Marksman is fun to play, but now that armour reduction debuffs aren't terribly broken, because being able to negate 100% of armour was broken, we find our damage being over mitigated compared to other classes. I greatly dislike Lethality, I've never liked DoT classes, and really don't want to play it, but I keep being told by more and more people that I'd "be better" if I respeced. I think that our spec has too many things that focus on defense and not enough focus on increasing our shots damage.