Handoko, that drawing is pretty good, how long did it take you ?
I have done a lot of architectural drawing for a house I built using Inkscape. Inkscape is really not a suitable tool for that purpose (more intended for artistic work and I'm no artist !) but I did know how to use it it. Similarly, I draw up a number of electronic drawing, again using Inkscape and again its unsuited.
Zamtmm, can you tell me what you mean by "electrotech" ? (Sorry but again I feel a screen shot would save a lot of words ! ) Can your drawings work with a 'library' of components ? For example, in drawing up electronic circuit diagrams you like to have a pile of predrawn electronic components on hand and drag then onto the drawing. In many cases, lots and lots of times.
And getting back to the architectural, dimensions are very important. Do you 'scale' your drawings so, as I add features, I can determine how big they are ? eg, I want to put a wall in, and I know its 6m long, can I easily draw a (scaled) 6m wall ?
Interesting project !
Davo