I was going to point that out- there are PLENTY of all tube heads around that seem to fit your basic needs re: simplicity, lack of "extraneous" circuitry, gain, etc. Orange, older Sunn, and of course the vintage and newer Ampeg offerings could also be added to the list, as well as a handful of other smaller boutique builders. I personally am intrigued with a design that does something different than what is already available, whereas you seem to want something that already exists in a handful of different flavors. I'm happy that both options are readily available (though some are unfortunately outside of my comfortable price range at the moment).
I will be interested to see what this "Limiter" really is. There are plenty of stories of employees (customer service reps on the phone at that) at Mesa having little or no technical knowledge about their existing products, so I would not be even a little surprised to find out that a Mesa employee is misrepresenting products that don't even exist yet!