Welshy, that is probably the most crap i have ever read in six lines.
Would you really want to carry boxes and boxes of tyres to every national just in case, everything from holeshots to mini pins and every possible compound in between
I know i wouldn`t and im sure it would put more people off than just making them choose between two brands of tyre and maybe 4 compounds, which the shops on site will most likely have also.
If your going to post crap i think raceshat is the place for you, i think they will appreciate you