Dear David Baszucki
Tix is one of most imporant currency on Roblox. Removal of them will cause many problems, from Veterans leaving to new players being disappointed why they do not have any Robux.
Also think about players from Europe,South America or Asia. Roblox do not support other currencies than $ or Pound.
Tixes are only source of Robux for them.
Please consider my opinion.