Bypassable Xover on reggae preamp

I've been thinking lately of getting a preamp for my sound system. Must be something like 5 or 6 years I've been wanting to, and I've come up with an idea that I wanted to run by sp: I'd like to be able to insert a processor in the preamp signal chain. Something along the lines of having outputs right before the xover, and inputs for each way, with a bypass switch so I can still use the internal Xover. I'm a live sound engineer, and am used to install and optimise sound systems, but it never occured to me to use that knowledge and workflow on my own. I very well know that there is a particular sound to a preamp, and in no way do I want to lose that, but it itches not to be able to time align, optimise xover points, set limiters on our bins (2x HOGs, 1x USB, MT130 style mids and comps on horns for tops).

I'm pretty sure I'm not the first one to have thought of this, just wanted some input on the idea.

Cheers