Absolutely no doubt for Dave & Connor needing to come back. They dominated everyone while on crutches. Others since UB I'd like to see are James & Jaymes, Bopper & Mark and Andy & Tommy. I also think it would be cool if international version teams could come, if it were possible, to race other countries around other countries. Sam & Renae, Sticky & Sam, Jet & Dave... Marc & Rovilson who I never watched, but were pretty dominant until it really counted.