I see the Achilles heel as being the link up with Turbomecca, whose product support is very much about who you know or if part of a 'hot-contract'. Not so great for the single operator who could previously easily source a 250 for the 206B. Spares have always been a Bell strong point and helped many a small operator make it through the season without ruined cashflow, caused by months on the ground.
R66 went the other way with a simplified 250 getting rid of most of the axial flow compressor.
Time will tell and I wish Bell the best of luck, however they may want to think about setting up a deal to make the Arrial in the US (or at least under their direct control!)
Flug