Daisy chain 11 Mosaic MSC4 --2048 channel output over 3000ft with ethernet

If I am understanding the question correctly...this is not an ideal wiring architecture. Connecting through multiple switches in a daisy chain fashion, would introduce hops, which introduces latency. This would likely result in undesired timing issues between controllers. If you design your switch architecture in more of a star topology, this possibly could achieve what you are after.

Is there a specific reason you need 11 controllers in 11 different locations? Can you put them all in 1 location and run what I presume is DMX, all out from there? Or, might a single MSCX work better for you?

If you could describe, in detail what you're trying to control, and the desired control intent, then we may be able to provide suggestions/solutions that better suit your needs.

DMX lines supposedly can only run 32 systems and cannot span 300 feet.  Right? I am new to lighting design.  Most systems wont work for 3000' right?

DMX and ethernet are very different. DMX is based on EIA-485 and can do 1500' with some manufacturers claiming 2500' under ideal conditions. 

It sounds as though you could use some expert advice from someone that can look at all the specifics of the project and sort out these structural issues. How many DMX addresses are needed at each location? How important are the timing issues Abby mentioned? And you already mentioned the need to have someone else do the programming. Perhaps the local ETC dealer can help or help you find someone. 

DMX and ethernet are very different. DMX is based on EIA-485 and can do 1500' with some manufacturers claiming 2500' under ideal conditions. 

It sounds as though you could use some expert advice from someone that can look at all the specifics of the project and sort out these structural issues. How many DMX addresses are needed at each location? How important are the timing issues Abby mentioned? And you already mentioned the need to have someone else do the programming. Perhaps the local ETC dealer can help or help you find someone.