There is endless chatter on forums about the Rega philosophy and mass, etc. But Rega is a successful company, started in the 70s with lots of dealership support.
If you stay with Rega cartridges then there really is very little fiddling needed. Rega is one of those brands with component system synergy. So, if considering the P6 or P8 you need to listen to the Ania Pro or new Apheta 3 plus the Rega Aria phono stage. They all work together well.
If you are an audiophile who likes to play and swap things around this is not the system for you. If you want a “I just want to enjoy my records” guy then at this price point Rega is still worth checking out even if for comparison evaluations only.