Yes nesquick is still alive, but slowed down though (i have another project going on)...
there are still a few bugs remaining in the CPU emulation part, and it is very hard to trace them by hand only with a basic debugger like vti. In fact, some games crash only after a few minutes, and it seems that the badly emulated opcodes write data in the wrong place in emulated nes RAM, screwing up the memory (this is easy to establish, by dumping the emulator's RAM while the game is runing, and comparing the data at the same moment with the RAM of a working emulator such as fceu). The difficulty is to find out when does this memory corruption happen, and it is a very long and boring task when you only have vti. I'm planing to make a set of tools which should simplify the debugging work, I'll have to think about that.
Anyway, I would like to have a bug-free CPU core before implanting the missing PPU features.