On the CRJ200 you have the problem that with WING + COWL A/I selected on, the pressure at idle thrust is not sufficient to supply both systems, so you have to increase thrust again up to a certain level. Use of speedbrakes is almost always a must in this situation, especially in the latter stages of the approach when you are descending at minimum clean speed.
Apart from this, i agree with most what has been already said on this thread regrding (mis)use of sb...