Not a mead maker here either, but after I took up brewing, a family member got hooked on mead making and I did a lot of reading about it to try and help answer some of his questions. In everything I read, I do not recall ever hearing of making a starter. There is a lot of info about feeding the yeast nutrients, and oxygen (and some debate on what and how to accomplish both of those); with most mead recipes calling for additions of yeast nutrient on a schedule based on either time, or gravity readings. Apparently honey is practically devoid of the nutrients the yeast need for healthy cell wall growth. So mead makers either follow one of the nutrient addition schedules, or many recipes will call for additional things like raisins that will naturally add the needed nutrients.
As for starters for beer - several of the folks with earlier posts have much more experience than I do with that, and I would carefully consider the advice they have shared.