There seems to be a little scaremongering going on here.
The (very rare) pitch oscillation is not as violent as this event seems to have been, particularly in the cabin- it is at its most severe at either end of the aircraft. The few events to date have not been violent enough to toss cabin crew about- it isn't that sort of motion- more a rapid oscillation of a few inches.
BA addressed the issue by issuing a variable speed limit, to aircraft not equipped with a very simple damper mod, to address the theoretical possibility of structural damage if an oscillation event occurs at high speed. It is not 225 knots, in fact it varies with weight and fuel mass. It is only limited to 225 knots if wing tank fuel falls below about 2200 kg for a -300 series, or around 2700 for a -200 series- in other words, not much fuel at all (you typically land with 2200 or more if you take plog fuel).
In normal flying, the limit usually falls around 275-280 kts which is not far off Vmo anyway.
Most aircraft will be modded within the next few months, its a simple fix.
And- 2 BE or not 2BE- if you really think this is the "latest in a series of safety scares" (I realise you were quoting), I for one would much rather by tooling about in my 146 than most aircraft- there has never been a fatality due to an aircraft structural or mechanical problem on the 146- unlike 737s that roll over and dive into the ground or lose their roofs... (sorry 737 drivers, not picking on you, just making the point). Also, more people have been affected by fumes on 757s than the 146...