Would be great if we could have RAIM prediction/report for a planned route.

With more and more GNSS IFR approaches popping up, there is a mandatory requirement under PBN for crew to check RAIM prediction for GPS units, particularly older models. This can be done online or within the unit itself (e.g GNS430/530).

Integrating this feature would be very helpful to the GA community over the next few years.

I see 2 areas where this could be added. Airfield’s tab and briefing pack. Additionally, under planning settings, would need the ability to adjust the RAIM prediction parameters (e.g Mask Angle etc).

Eurocontrol has an online tool:
http://augur.eurocontrol.int/ec/terminal-approach

There is no requirement for a RAIM check for a flight using an SBAS capable GPSS navigator certified to TSO-C146C, only the older non-SBAS navigators.

Given that the latter are a diminishing minority, and the boxes themselves can perform the check, why would you want further encumber SD with more code and complexity for a limited and reducing segment of its market?

You are correct re SBAS models, and I did mention older models. Diminishing yes but that could take many years.