Vessel invisibility and radial decouple snap-on points, are they necessary? [VAB/SPH]

[gateFriday]

Hi, long time player and rare poster here!

For the longest time when mounting the Rockomax fuel tanks or any SRB on to a vessel, the part of the vessel obscured by said parts turns invisible (except some engines oddly enough). When placing other parts however the vessel stays the same with only the part you are going to place turning transparent.

Is there a reason for this? Because when I build this is simply an annoying hindrance when placing parts that the Symmetry Mode can't handle or handles "wrong".

And speaking of annoying when placing; Why do the radial decouplers have three snap-on points, or the big flat one having five? When not in Angle Snap Mode I sort of get it but in what situation do you need to place something at the edge of a radial decoupler? Wouldn't it be simpler/better to have only one snap-on point?

I am genuinely curious if this is a concious decision (and in that case, Why?) or if it simply is an oversight that older players like myself have have become used to and therefore don't notice anymore.

[EDIT]

Updated post with images

Edited December 3, 2014 by gateFriday

[Sirrobert]

I agree on the radial decoupler things, that's just silly.

But I'm not sure what you mean with the visibility. Could you put some screenshots explaining that?

[gateFriday]

I agree on the radial decoupler things, that's just silly.

But I'm not sure what you mean with the visibility. Could you put some screenshots explaining that?

Sure. As a reference, the biggest 1-meter fuel tank (FL-T800) becomes transparent and the entire vessel behind it is still visible, making it easy to see where you are placing the part. However with the orange fuel tank (Rockomax) everything behind the tank "disappears", except for the engine which is visible as a single part. And the biggest SRB makes even that disappear (SRB).

I just find this to be an odd design decision.