i meant more about the general predictability of reasonably tight players, it would be a poor idea to very consistently bet the same amounts preflop with given great hands to start (AA, KK, QQ, JJ, AKs, AK ...)

so the odd time for deception one could limp with say AK or AQ or so, correct?

I think preflop raises should generally be larger with JJ->AA than with AK, AQ as they are favoured to win..