I think everyone covered it. The termite deal is certainly the deal breaker, if anything, for me, unless it is extremely limtied (doubtful). I certainly understand the perfect location part. In our area, we narrowed it down to where we wanted to be and we were willing to significantly downgrade the actual house to be there. If there is literally nothing else out there I'd see what the sellers will do. They might need reminded that termites are a Big Deal and they will have to do something about it for ANY buyer (except, I guess, cash). We got lucky, waited a bit longer on pulling the trigger, and found a perfect house in a perfect location. But it took us about 2-3 years of looking to do it.
On the flooring / trim / etc. I always assume I will have to do some replacement, even in a new home. Tastes are different, etc. I wouldn't necessarily count that against any home unless you just happen to find the one that perfectly matches your tastes (unlikely).
On the trees, I can understand that being a bit of a big deal. Hundred year old trees will obviously not grow back any time in your lifetime. The house we are selling really needs 3 big beautiful trees taken down and it will significantly alter the landscape (negatively), so we are leaving them up. It will not look nearly as nice afterwards and there's no real way to mitigate that except time. As far as the quote, it sounds high but if its a tricky area, power lines, hills, etc., and really big trees, I could see it. I think I paid $600 a couple years ago to cut up a downed tree that was 3 feet in diameter and that was without stump grinding. It took 3 guys the better part of a day to remove it.