What alpha problem ?... Mentioned where ?...
Please, elaborate... What LOD and quality settings are you referring to ???
What icons ?... If you are speaking about the status bar icons, the setting to change them is in the Preferences floater, "Cool features" tab.
The default camera follow angle and distance will stay what they have always been in all official viewers and most TPVs. If you are not happy with the default, you can change it from the Preferences floater, "Input & Camera" tab ("View angle" setting for what you called the "camera height").
Which spam ?...
Please, do not expect me to implement everything other TPVs have implemented. For a start, the various TPVs use various code bases. For example, the Cool VL Viewer renderer is in fact the same as LL's viewer v2.6 mesh viewer (so it differs from all current v3-based viewers). There are pluses and minuses for each code base (the Cool VL Viewer works great with most OpenGL drivers when v3 viewers crash on old ones, for example), and there are various graphic glitches in the shadow renderer depending on which viewer you use (none of the existing viewers got a 100% working shadow renderer: shadows shall be considered experimental !).