Different common-law countries have addressed this issue in various ways. Restricting jury trials for more serious offenses (in this case for more serious charges - ones that could potentially result in a sentence of more than 3 years) is one way than many common law jurisdictions have taken.
It's not ideal but it's infinitely better in my mind than the practice used in the US to reduce jury trials. To avoid the cost/expense of a jury trial, public prosecutors threatens to press for a large number of charges or some very serious charges - carrying the potential of very long sentences - a sort of Gish-gallop approach.
Even if the chances of successful prosecution is relatively small for any one of the charges, the defendant is forced to take a plea-deal to avoid the risk of spending years or decades behind bars. Thus the defendant ends up with a guilty record and often a custodial sentence without any access to a trial or the chance to present their case at all.