Dave, lemme irst welcome you to the group.
I have a 1987 GE GSD1200G PotScrubber, one of the last of the rapid advance timer dishwashers, aside form KA superba.
Anyway, I've been dealing with these dishwashers since 1963. I've simply learned to work around it. But then again, my dishes are from 1961 and they fit very well, I even bent the small saucer rack to fit my cereal bowls.
Yes there are some times the tower and silverware basket get in the way. I do creative loading and move the silverware basket around some whre it will fit with the tines. I have to admit, when GE came out with the super upper rack, that made loading bulky items easier--such as my 5 qt. crock pot, stock pots and similar things. It's also very rare when things in my top rack don't get clean. But 99% of the time, even when I have large cassaroles, skillets, and mixing bowls all stuffed in the bottom rack, as long as there's space for the tower to pop up, cleans like a champ.
I used to have a link to some photos of my dishwasher loads on the old site, but now gone and I can't find my photos under my yahoo id appnut. If you can find them, good luck.
In fact my load right now has a 10.5" skillet tilted over and resting on the saucer rack to provide an ange; a 5 qt. mixing bowl, 9 x 13 cake pan, a small roastin pan, 4 qt. sauce pan, skillet lid, rimmed soup bowl, salad plate, 10" round biscuit pan, and a saucer--that's just in the bottom rack. The top rack is equally full. The skillet had some burned on stuff on it; cake pan was baked mac & cheese and mixing bowl mixed that up. Ran it on PotScrubber with Cascade Complete powder, all is immaculate, including the 16 oz tall glass on the right back corner of the top rack.
Personally, I prefer the tower for dealing with tall cookie sheets and platters. I had a Kenmore made by D&N with an upper rack wash arm. Was very frustrated with it's height limits and it was a piece of junk, dind't clean worth spit.
I know someday I'll have to get a new dishwasher, but the tall tub design will help me with the upper wash arm.
Bob