thanks @willyht and @helomech ...I think you both are onto something by suggesting that I find it easier to stick to the safe path here. I need to think about that a bit more.
The Revel 328s offer a known quantity to me...not just in terms of the sonic signature but I also know they will play nicely with my electronics and cabling. With any other speaker all that could get thrown into disarray.
I find myself in a unique situation due to some extensive remodeling going on at my house. I'll have a new system that I can build, so this means I'll likely be moving the 228s into this new system to make room for the 328s. One thing I could do here is perform the side-by-side with the 328s and then determine if it's worth keeping them or unloading to then move onto the Borresen or something else.
@helomech thanks for the breakdown on the technology behind the Borresen ribbon/planar tweeter and the greater background on them. It's interesting that you find their tweeter better than the Esotar. Having a pair of the Dynaudio Heritage Specials I have found that implementation of the Esotar to be pretty spectacular. I'll poke around more on the Borresen.