It is not so simple to convert a four engine airplane to a two engine airplane, even though they did offer a two engine version; it requires a lot of expensive redesigning of the aircraft systems to make it operational; and not to many airlines showed interest in the model.
Also here at MM
in Colombia we had nine Avro RJ100´s,
the major set back was its Allied Signal LF507-IF
engines which are extremely delicate; to the point that in three years we had 188 engine removals caused by many inflight shutdowns and failures due to a desing flaw of the main bearing seals. To the point that the airplanes had to be grounded and returned to their owner after a long lawsuit for which compensation was awarded to MM
The airplane had a good feel with the flying public and were liked by crew and passengers who had a chance to ride on them here at MM
But I think the four portable hand held hair dryers installed under the wing really sent their goodwill down the drain, even though they changed the name from the original BAE146 to RJ100. Even with two good turbofans installed it could be a great airplane but the damage to its fame here in Latin America is already done.
Also let me remind you the acronym for BAE in this specific case is: