Some people from my list last year and the year before have made it up so I'll strike through the redundants:
G. A. Plauché
Angela Keaton Mary Ruwart
Tom W. Bell
Just because the struck-through have been there before, doesn't mean I would mind seeing them again. On the contrary, I like all of them
If need be, I can add more names to this list, rounding it to 25, 30, or more. If it's necessary I'll do the work of contacting them and recruiting them, but I'd need specifics on what can be offered (flights, rooms, meals, reimbursements, fees, etc.) and to whom.
Lacking guidelines as to what sort of speakers are most desired I have just made a "most-wanted" list. If criteria are given (e.g. popularity vs. perceived need vs. ability vs. content) then I will tailor this further.