Hello Peter,
The first thing I would like to note is that we have a lot of new Tokay keepers visit this forum on a regular basis. It's not uncommon for the same good advice to be repeated in thread after thread to assist a new keeper. This forum is the most read and referred to in regards to the husbandry, care and genetics of Tokay.
Having said that, the 'Tokay will eat almost anything' topic has been well covered so far. Using pinks or fuzzies, dead or alive to pull a rescue or fresh import from the brink is not uncommon either.
And just because they'll eat something does not make it a good staple in their diet. This different from providing a varied diet. Captive animals do not have to hunt and protect a large territory and expend energy in their enclosure like they do in the wild so feeding them a high fat diet will certainly put extra weight on them fast.
I think we can agree that eating fast/junk food for every meal will result in several health related issues and shorten your life. Because huge Tokay still have great value in Indonesia, China and other parts of the world, Tokay are feed chicken liver to fatten them up. Tokay will eat it and they are akin to a 500lb human in a very short time.
The idea of Tokay eating a fruit & sugar based diet is also just as bad. Actually it's worse because the Tokay become 'addicted' to the sugar and will not go back to hunting insects. Again, I think you can agree that eating candy 24/7 is not healthy for any person. Repashy is designed for nectar and fruit eating gecko.
So again, what you do with your Tokay is your business. U-tube is full of misinformation on the light side and naive and down right abusive behavior in the more serious side.
This forum has taken on the responsibility of presenting tried and true experience to help educate and provide as much good information as possible. You asked if anybody has any experience with feeding dead rodents to Tokay. Yes, and we responded by sharing our time and our experience to help you, and everyone else reading this post,with the best information we have to date.