collection doesn't have an L?

Not following "c" as in "clinking, clanking, clattering" which produces the onomatopoeia. The new lead sound in the string is "co" as in "concatenation".

The "cl" sound is accentuated percussively by the "k" sound in the first two words and the double "t" in the 3rd. "Coll" does nothing to extend that percussion.

We may be arguing about trifles here. It's all a matter of personal acoustics.