I agree that it is a good value proposition if you use all three accounts and have a SIPP that benefits from being large enough for the fee to become cheaper than competitors.
As I mentioned in a different reply, perhaps an idea could be for people to choose their bundle for the standard plan? So in my situation, pay the 5 pound a month and have a GIA with lower fx fees and a SIPP instead of an ISA? Or let the SIPP have its own pricing structure and allow those who choose the plus plan to unlock that extra value that they will get from it?
It just seems a shame for those in a similar position to me to go to Vanguard or Moneybox when they could be starting their journey with Freetrade instead?