Respeccing my Rogue - need advice

The unthinkable has occurred... I have spare Plat!

In light of this, I have decided it's long past time to do something I havn't done in 5 months, finally respec my rogue and make use of the other two roles I purchased long ago that still remain empty.

Up to this point, my build has been an extremely versatile Saboteur/Marksman/Riftstalker build (based on my WAR Engineer), that could do everything average and nothing exceptionally well. I'm hoping to become a bit more optimised and useful.

What I need is advice on...
1. A replacement all-purpose PvE build (preferrably ranged focussed) that can survive alone out in the world and be a useful DPS in anything from large raids to small dungeons. Solo'ing a Chronicles would be fantastic, but I'm not getting my hopes up that high.
2. A good Tank/Riftstalker build - it is rare to find someone requesting DPS for a dungeon, tanks and healers always seem to be needed.
3. A good Healing/Bard build - see above.

I've tried the Rift Forums, but it's a bit of a confusing muddle and the Zam soul calculator just makes my head spin with all the possible combinations. My platinum isn't infinite for too much experimentation, so I'm hoping some Guildies can help out with advice on what works for them (and why it works).

Cheers,
Dargron

1. Here's what I've found that works for PvE. Solo: Some split between marksmen(~31), ranger(~25), and assassin(~10) to allow you to use your pet to tank while you pour on the dps. I've also been playing a 51 bard, and 15 riftstalker for PvE. It is a little slow on the killing but you can take on some elite 50's with it. Group: For Raids and dungeons I would recommend ditching the pet for a new soul, 51 MM and 15 Assassin. Or however you want to arrange the last 15 points after 51 MM. 2. I can't tell you anything about tanking really because I don't think a rogue should, just my opinion you can take it or leave it. 3. 51 bard, 15 Riftstalker. Basically all you do is spam motif of regeneration and coda of restoration by way of power cord and cadence, with an occasional riff for a quick Virtuoso when stuff hits the fan. That's all I got for ya, if you have any questions message me in-game or on here.