For example...
Martel vs Koloff a few months
Martel vs Khan a few months
Martel vs Valentine many months
Martel vs Wahoo (after heel turn) a few months
Martel & Garea vs ??? a few months
Wahoo vs Koloff a few months
Wahoo vs Khan a few months
Wahoo vs Valentine many months
That is way over a year and that is rushing things. By then you have trades, re-drafts, new people coming in and new people built up. If I brought in a new main eventer to begin with then they would have to toil on the undercards.