Careful there, the Hyperbole Police have spies everywhere...
Hehehe.... Indeed! The point I'm making though is that it's all about achieving the best balance of compromises.

No audio equipment is perfect.

Therefore, regardless if crossovers make things worse (an undisputable fact), I'd lose far more than I'd gain by using intrinsically worse sounding speakers than the Tannoys, just to lose the crossovers in a totally different design!

Regarding, making further modifications... Thanks for the tips, guys, but I can't really be arsed. Why attempt to 'fix' what ain't broken?

The crossovers in my Tannoys are very simple, though, and of the highest quality, so I reckon that I have achieved the best balance of compromises, and they stun me every time I listen to how wonderfully they reproduce music - job done!

Marco.