Another is the fact that in regard to the size and power of government, Lott will appear to be a avid protector of the Constitution when placed along side Frist.
Senator Frist is likely to bring social spending to a new high. He will effectively take many of the Rat issues and mold them into the republican party.
I do not necessarily see this as a good thing. It will will help to win elections, but it will not help control a government that is growing faster than it's food supply.
Something will have to give way.