Well recently I have been working a super secret project and found that traditional geo-merging is so much more exact. Ghost Merging is great, not complaining about that, but it lacks the perfection in many cases. Example: Super secret project spoiler Spoiler I have ghost merged a block into the sand somewhere in the desert of sandbox where the ground is uneven. Now I want to geo merge another block alongside that at the perfect height. Ghost merging causes the object to be not flush to the other block and causes a bump when walking over. Now traditional merging would remove this bump and make the object perfectly aligned in every way to the other object. So anyway, what is your views of Ghost GEO-merging vs Traditional GEO-merging. Notice I'm not talking about "set object to spawn at start 'no' and start new round". I'm talking about merging objects with the map geometry just so there is no confusion.
I get where you're coming from, but when ghost-merging with a second controller, it's really not hard to make a perfectly flush surface. And before I even start to believe you, I'd like to see some evidence.
When I post my map preview Ill show you what Im talking about. Just think stock sandbox or foundry map placed on uneven surface but still straight so some of the objects are geo merged.
I never tried traditional geo-merging because it looked time consuming and complicated, so when ghost merging came along it really helped me. The only thing about it is, as you said, that surfaces are almost always bumpy. Still, I'm willing to let them be bumpy just because ghost merging is so simple and easy.
If you brace what you are going to ghost merge or use a second controller like Kuroda said, then their shouldn't be many bumps or no bumps at all. In some cases though where it would effect gameplay and you are willing to put in some extra effort you should, I do not think in this case it is necessary though.
Second controller and pre-bracing to get a consistent angle. You'll never go back to the old way of geomerging(and only rarely will you need the old interlocking method).
Starting a new round to interlock or merge a floor can be much easier than ghost merging, however in general ghost merging is easier. Old style merging and interlocking are quite slow and mostly obsolete but still sometimes have their uses.
I honestly don't see where Classic merging could succeed in anything over Ghost merging. It can do everything standard merging can do and more if you know how to do it right. and standard merging officially still has NO votes =P