Converting a durso to Bean Animal

[FishyFishy!]

Am I totally out to lunch thinking that normal internal overflows (top to bottom) with two holes shouldn't be used as a beananimal?

I just think that with 24"-ish height of the overflow, and very minimal flow going into the overflow itself, there would be detritus buildup at the bottom of the overflow.

Realistically all three pipes should be in the same overflow.