Hi Michael,

I relatively frequently stumble upon the problem of curves where i cant tell easily why those arent closed. This for instance happens if one offsets a closed curve. The resulting curve often is an open one. The only way to fix this as far as i understand is to move around every single vertex of the curve to find the open part. This obviously is an enourmously tideous thing to do. So it would be awesome if you could provide us with some visual indicator of the first and the last vertex of a curve. (Apart from maybe fixing that offset thing. ;) )
A related thing would be that solids sometimes break on operations like creating fillets for me and as a result turn into joined surfaces. Trying to spot the area where the solid broke to fix this seems to be pretty much impossible to me. But i understand that implementing a visual indicator for this is probably alot harder to do ...

Sebastian