QDM
The electronic messaging system is a nice idea, but as others have pointed out a) you have to pay for it and b) you have to pay someone to input the data.
The average LARS unit is a one man band. Controller doing the job, writing down the data, doing handovers et al. It's often not a room with banks of radar consoles - it's a regional airfield with one and maybe (subject to their own inbounds/outbounds) two consoles manned - but more often than not just the one. That's one person doing arrivals, departures and LARS plus landline comms. It then becomes a case of proritisation - Radar services get the details passed, FIS sometimes (not always) don't.
Without a huge inject in cash what you have is what you've got.
CM