I am with Steve H on this, I love the Telrad and use it 99% of the time even with GOTO's. The rings are perfect for aligning with maps etc.. If you know how to do it it's easy
Sure putting a "dot" on the target it good, what about those rare occasions where you see an object in your telrad or other reflex sight and want to know how far the object is from what you are looking at? With the telrad at least it gives you some idea whether it's 4 degrees, 2 degrees or whatever.
Each design was specifically designed for a particular purpose in mind, the red dot finder was designed for BB guns (or real guns) where you dont need rings just a dot. It was put on telescopes as people wanted a cheaper alternative to the telrad. The Telrad was made for Astronomy in mind.
In any case its upto the individual which type they prefer in the long run.
Oh to add to this, they can put info onto a HUD so why cannot something be made with Astronomy in mind, something like a HUD which tells you where you are pointing, and the object you are looking at, also with variable sights...... Wish I had the engineering experience, could make a small fortune...