I have no idea where you are getting the idea that RH does all this stuff "for" you? That has not been my experience at all. It does what I ask it to do, and ONLY what I ask it to do... Have you even looked at the newer versions?
Here are a few screenshots of RH V1.0.6, and Slic3r v1.1.7 (yes, there are newer versions than this, just haven't gotten around to updating)
Main RH screen, when you first open it... it opens on the object placement tab for loading your models... (note: I use the "advanced" mode, not "easy" - maybe that is where your problem was with it - if you even tried it?)
Take a good look at the tools and tabs available...
next up is the slicer tab - you do have a couple of options for which slicer you prefer by clicking on the manager button. I like Slic3r, it works for me, but Cura is included as well if you prefer that...
Click on the configuration button and you get this...
LOADS of available options to tweak settings - everything from # of perimeters, top & bottom layers, and infill, to advanced settings like speeds, and extrusion widths....
Speed setting tab...
Advanced tab...
Back to RH - loaded a model and sliced, now we have the preview tab....
Using the tools on the left you can zoom in, turn/rotate it and inspect to your heart's content.. (in the object placement tab, you can move parts around on the bed, scale, mirror, rotate on whichever axis you choose - say if something is standing up and you want to lay it down...you get the idea.)
You can view as a complete sliced model, or you can view individual layers. You can even view the travel moves the printer will make...
Click on the g-code tab, and gee... you can even edit the g-code! Every. Single. Line.
and finally, the manual control tab... manually move any axis, change temps for both extruder & hot bed, alter feed & flow rates, part fan on/off & speed....
There is a lot more I could take screen shots of but I think this should do for now... Is there anything missing in here that you can do with v0.95? My guess is no...
Not trying to convince you to use it. Use whatever you like. But don't go making blanket statements about something if you have never actually used it.
SD4 #1 & #2 - Lawsy carriages, E3D v6, Rumba controller board, mirror bed plate, X motor fan, upgraded PSU & Mica bed heater
SD4 #3 - in the works ~ Folgertech FT-5, rev 1
Printit Industries Beta Tester - Horizon H1