My Amp is good but probably the weak point

Take a look at this Valvet Class A amp. Only puts out 12 and 20Wpc into 8 and 4 Ohms, respectively, but that should be fine for your speakers and also should be a significant upgrade across the board over your current amp especially in the areas you mentioned wanting improvements.  And this lightly used unit is going for only $2150 so could save you $$$ as well.
https://www.usaudiomart.com/details/649914534-valvet-e2se-class-a-power-amp/

Here’s a review fyi (the reviewer bought the review sample BTW)…

https://positive-feedback.com/reviews/hardware-reviews/valvet-2se-power-amplifier/

Hope this helps, and best of luck in your search.

As always....speakers, speakers, speakers.

to be slightly more serious, if op is sticking with his heresies, he should consider a lower powered single ended tube amp

heresies won't image very well they are more a wall-of-sound kind of speaker, one that benefits from efforts made to smooth them out, make them less aggressive and raspy

odyssey amps have a very fine treble for a class ab standard topology power amp, but the speakers by my estimation (and my ears) need more help in the 'refinement' area

All, thanks again for all the opinions. Regardless of wether I agree, I am happy to get them anyway.

it’s true I like my Heresies, so with that said, in my signal chain what do you consider the weak point?

If you like what the Khartago is bringing , maybe you are looking for more of that Odyssey sound. There's a Stratos for sale on USAM right now for just $850. Maybe it's worth it to you to try it. I went from a Khartago Extreme se to a Stratos and I feel it was an upgrade. (get this, got the Stratos for $250!) You may find it's the upgrade you're looking for and save a bundle to boot.