If SVG-Edit is too much for you, it's possible that you want too much. :-)
Well, you can try also this:
http://svgkit.sourceforge.net[
^].
(But, generally, it's hard to find what you want, because — who would do it for you? It's clear that you can just take SVG standard and Javascript and start creating some behaviors starting from first principles, or use some more or less comprehensive framework/library, but you want something in the middle. People may not be so interested in getting in the middle and giving you some basic results. Perhaps you have to be less picky and try to put more effort in what's available. My experience shows: if one wants "something simpler", later on it becomes "one more little thing", ad infinitum, often going nowhere. But it is motivated by your desire to get to the root of things, I greatly appreciate it.)—SA