Go Active Crossover or Upgrade existing XOs?

Well from somebody that has always had speakers with passive crossovers, I recently have been introduced to the world of active crossover enables Line Array speakers , and I cant be more happy with the performance, soundstage and overall simply floored response that my ears are treated to every time I listen to them.
   As someone mentioned before , active crossover is mainly used in the home made speaker application, such as my Array system which consists of 28 6.5" woofers and 28 piezo ceramic tweeters in each tower, which were designed and built by a competent electrical engineer (done properly, not a kit per say), the option to adjust and calibrate the frequency, gain of each channel is pretty simple and rewarding to say the least.
    And yes they are bi amped, with A REL sub woofer.
 There are many active crossovers in the market to choose from , dbx, Samson, Ross power, couple older Nakamichi systems and so on, the one I choose offered many features such as phase control for each channels outputs, mute for each ouputs , delay and threshold limiter etc. all using balanced connections but also available in unbalanced versions to match your equipment. All for under $300.

Don't be scared to venture into the unfamiliar, you might be surprised at what you have been missing.
   

Wow, now that was group of very well laid out responses. 
-Millercarbon's point is not something that can be ignored.
Perhaps most speaker manufacturers just don't want people
adjusting the sound they worked so hard to create?
-dicarmeli exposed me for the ignoramous I am in this endeavor.
But I can try to learn about it.
-Unfairlane's point sounds reasonable. I will find out what order 
I'm in. 
-Lewinski's advice is to learn more, then decide. Wise.
-George's work was for naught.
-I like the way Piazanno put it best. Go For it!!!

Correction -Millercarbon's point is something that can NOT be ignored.

George's work was for naught.

Only to those with no ears.

@pizzano may I ask which technology you used for about $300?

IMO there are many speakers with passive crossovers indeed but just a small amount of these are implemented right, that's why there is an aftermarket modding it. There are many challenges with passive (impedance changes, phase etc) that only experienced designers are able to make it work and this represents adding more elements in the signal path and with digital dsp advances, passives will fade eventually.

Answering directly to the OP @gadios, I will definitely experiment with active or active digital if budget allows it (and time too). In my specific case my speakers have passive crossovers but to my ears I like to think are well designed.

I am not an EE, or audio speaker or amplifier designer, just another guy who likes music reproduced in the best way possible.