Potentially yes and Openreach is looking at boosters to improve speeds to ensure the 2 Mbps USC can be met.
For people with a 30dB attenuation line who want to boost speeds the immediate solution would be to purchase a bonded solution if FTTC and other solutions do not appear likely within the next 12 months.
As a solution to boosting line speeds for large areas boosters are an inefficient way of doing it, as a second pair is needed to power the booster, plus the cost of the device. Any deployed in the UK would also have to satisfy the ANFP.