There is a fear, brought on wholly by the record of the 902, about reliance upon 'one manufacturer' although the recent experience with EC and the 225 suggests that EC will be capable of putting right the problem quickly [if you count 6 months as quick].
Anyway, nothing that the EC135 ever did - and the police across the world are reliant on it so if it does go wrong air support as we know it will be suspended across Europe.
The trouble is that the alternatives are either too old [109], too big [189] or not certified [Bell 429] so the 902 will have to limp on a fair bit longer.