Heh yeah - Ableton, if you want to fly me out to Berlin and pay me to integrate all this stuff, please feel free to give me a shout
But I was thinking about this the other day, from the point of view that none of what I've done was particularly complex, so Ableton could definitely do it themselves - I guess the reason why they haven't is that it wasn't seen as a priority for getting Push out of the door. If you've not worked in software or a similar industry, I guess it can be hard to appreciate the cost of adding a feature in terms of designing it, developing it, testing it etc. - even simple things can become really complex, particularly if you are adding multiple options for how something behaves (every option creates a whole new set of test cases and potential complexity and issues).
A lot of Ableton's decisions can be explained a bit better if you think about it from that point of view I guess... so to my mind, the best way to create a solid, well designed piece of software which can still meet the niche needs of "power users", is to focus on getting the core of it right, and then provide a simple, powerful way for developers to extend the core functionality. Ableton aren't perfect in this regard, but the fact that Max for Live is quite deeply integrated and that they don't seem to want to actively stop us from fiddling with the MIDI Remote Scripts at least means we can get some of the way to adding the features we dream of. But really, it would be so nice if they released the Python source files - the decompilation process is a bit error prone (although if they upgrade to Python 2.7 internally in future, this should get a bit easier - at the minute, the problem is that the decompiler decompiles the .pyc files into Python 2.7 source, but Live only support Python 2.5, so some of the lines of code it creates aren't valid).
Will be interesting to see what BitWig does/doesn't deliver in terms of third party extensibility - not that I'd leave Ableton, too much invested in it and generally it works very well for me, but it's always good to have a bit of friendly competition
I have been saving parameter banks for my most used plugins and I love being able to jam with them without touching the computer. It would really help out to be able to rename the banks of parameters to aid Push navigation. 