Hallo!
I dunno. I'm pretty suspicious of toolkits and
API's that try to do "everything" automatically.
Well, it's not about doing "everything" automatically.
If you simply want to make a plugin with a quick GUI you don't want to
always program the communication over shared memory or whatever ... so a
class would be nice which already has this functionality (of course only
if you need it).
Programming plugins should be as easy as possible (as it already is e.g.
with lv2-c++-tools).
However, it's just an idea ...
LG
Georg