The best way to clarify things is that it's not a D100 system, it's a system that uses a d100. We're going to do out best and keep many of the TTGOR (Tri Tac Games Original Rules) mechanics in place, like the Roll Under system that Richard loved to use.
But, that being said, we are moving towards a modern generation of a rule system, so there will be a little "fudging" and "savaging" of existing characters.