>If plan is ok for one value parameters, then can be pretty bad for following parameters.
Happy statements are all alike; every unhappy statement is unhappy in its own way (see [1]). If user is sending different kinds of parameters, he is shooting in the foot. >Albe's proposal can be good enough for 2/3 cases and it doesn't block any other enhancing
Albe's proposal effectively disables plan cache, thus it blocks enhancing. If a user goes "replan every time" route, there is no way you introduce plan caching there.
I am sorry, I disagree. Albe's proposal should be compatible with current state, so your argument is too strong. Default is same.
