Tact 2.2XP for room correction "proof of concept"

I am currently integrating a 2.2 and 5.2 system using an analog MCH player as source, analog MCH preamp, outboard DAC, 2 channel preamp with bypass, external cross-over and bass EQ unit. In summary, lots of boxes, a cabling nightmare and no room correction other than for the subs. I use my system 90% of the time in 2.2 mode.

I also own a Casablanca III, and Theta will be releasing Dirac room EQ later this summer. Upgrading my CBIII would allow me to move from MCH analog to HDMI based, and allow me to do bass management and EQ in the Casablanca III processor, dramatically simplifying my system in the process. However upgrading my CBIII to HD Dirac level would be a significant outlay, so I want to test the room correction waters before committing a substantial funds.

So I am thinking of getting a used Tact 2.2XP to see if room correction (and better crossover filtering) helps my system, and if does move to CBIII HD Dirac when it is released. Has anyone used a Tact based 2.2 system, and compared this with ffect of room correction in a very good multi-channel system playing in 2.2 mode? In other words, can Tact correction be used as a good proxy for what to expect from a multi channel SSP?