The older hydraulic pump one have their own issues, there is a new replacement, Power Operated Gate Opener (POGO) to be added to user worked crossings (UWC). These are electric gates with a button with the advantage, as edwin_m says, less crossings required by the user. The parts are, I believe, much less bespoke. Also there is a signage change for all UWC happening after a few incidents in recent years, changing the normal gated crossing sign to a specific one with a gate and train.
The introduction of POGOs hasn't been without issue and when looking for the RAIB report, I actually fond a summary of learning on UWC that was published in 2020 and updated in May 2024 and has a lot of the details of learning and industry practice (though not the new signs, they are too new I think) and links to RAIB reports
www.gov.uk