Not sure where else they might put them...WB, Glenida, and Gilead are the only other lcal lakes I know that have them. Personally I would not want to see them introduced into any new lakes in the system since it's pretty clear they negatively impact the browns in Kensico.
Chris, I'm sure others like Ken and Tom can better answer your question, but my opinion is this: The surveys done so far show the lakers have a good foothold in Kensico. I don't think it will negatively affect their sustainability, but I think some tweaking of the size limits can be expected in the future since they will not be supplemented any longer. I'd say it's a success story in both lakes given the fact they were stocked initially and are now self sustaining.