I'm not saying we should copy Poland, but maybe introducing the rule where both reserves have to be U24 riders (or similar) from clubs academies would be beneficial.
You look at teams like Sheffield (Kerr/Howarth/Pickering?) and BV (Blodorn/Brennan) they've always got a stronger reserve than the rest of the teams. I'm not saying they should be penalised for having strong reserves as they've built their team that way, but if a in-form reserve can take 7 rides that's where a meeting can be won or lost.
I personally feel if you have to have 2 "Rising Stars" let's call them for arguments sake in your reserve berth it might make things more competitive...
Obviously, there are bigger fish to fry in terms of ongoing issues, however, it's just a suggestion.