Thinking about it, I probably would have left and come back at this point at least once. (Well, once more, I did briefly when it looked like the attitude towards solo-able Incarnate content was "lol, no, grind for it.") Or I'd just flat out be burnt out.
Then again, IIRC they were working on COH 2 pitches at shutdown, or probably would have been, so I'd probably have moved on to that.