both cosmological and collider data simultaneously
I like this way of putting it, and the alliterative 'c' at the beginning of both words!
conceptual issues and practical limitations of the Standard Model
What do you mean by practical limitations?
heavy Leptons
Why did you give such a puny name (variously meaning 'thin' 'small' 'light' etc.) to something heavy?
The Standard Model has limitations in the sense it cannot tell us anything about dark matter, it cannot explain the masses of the neutrinos, the three fundamental interaction strengths almost unify at high energies (but they just miss each other instead), etc... There are many hints of "this could not be the end of the story".
Because it is funny? :D