There are plenty of potential options. It could even be weaker combinations of bonuses found on the pirate implants. So Minmatar could offer an implant that does both shield HP and boost power, or shield HP and warp velocity, or something like that but with the overall values lower than the pirate implants. The goal being bonuses that don’t exactly synergize but that you might want on two different ships for the same pilot.
The main thing is that if they’re going to replace learning implants with something then it should try to hit a similar range of price points but with more room on the high end (preferably) and be similarly in demand to the regular implants. If you told me I could spend 500m-1b on a more versatile but less powerful set of bonus implants I’d probably go for it, personally, considering the high-grade pirate implants can be 1b each.