There seems to be a growing corporate strategy for NGC to focus on the Non-US market over the US and leave the US to PCGS. I may be wrong and this is in no way a dump on NGC (you can read my laudatory comments about Mark Salzberg and NGC in the "A SLQ Problem Coin's Journey to Righteousness" journal thread.) https://www.ngccoin.com/boards/blogs/entry/292-a-slq-problem-coins-journey-to-righteousness/
It appears that while NGC is increasing its investments in the international market it is not doing as much on upgrading the U.S. platform. The data I use to make the conclusion that NGC is shifting their focus to the Non-US market over the US is based on 1) they dumped all PCGS coins out of existing "World" slots, years ago. 2) The registry no longer starts with US coins but it takes an egalitarian approach to all countries listing coins alphabetically by nation (I start each of my "registry encounters" with Albania.) 3) While they have decreased their presence at US shows (Long Beach etc.) they have increased their presence internationally. This includes both a greater presence at international shows and NGC has opened new "bricks and mortar" Centers in many other countries especially in Asia. This "corporate approach" is probably working as they seem to be the dominant grading service for both World and Ancient coins. Their volume has increased particularly in Asian paper money.
With regard to the registry platform the registry navigation drives me crazy. When I finish working on my Complete Standing Liberty Quarter (SLQ) set and want to go back to Quarters to work on my "one per date" SLQ set or Early Quarters set and use the back navigation button on the browser, the browser does not go back to the Quarter's registry page but back to the first page of the NGC Registry (Albania.) I met with the NGC staff at a FUN show and explained this problem and they were clearly aware of as they said that others had complained as well. Alas 2 years and no fix and you cannot "bookmark” page 2, 3 or 8 even as a go around. If you bookmark page 6 the Registry opens to the first page (Albania.)
I believe in NGC and find their grading more consistent and fair than PCGS. I much prefer dealing with Mark Salzberg over David Hall. I remember when Heritage Auction was more ANACS than PCGS or NGC. Then ANACS slowly disappeared and it was NGC and PCGS. Now, for U.S., coins I am seeing a decrease in NGC leaving PCGS alone. I hope NGC does not abandon the U.S. market by default (by not focusing their prime effort in the U.S. market and shifting it to the World market.) As I said I believe in and prefer NGC. NGC brought me the Edge View which brings some coins to life. NGC, for the most part, photographs every coin that they grade (PCGS does not.) That photo can help you recover a stolen coin (I have done it.) These efforts by NGC are what sets them as the market leader regardless of who was first to slab a coin (PCGS 1986 and NGC 1987) or who the Investor Class prefers. Please don't leave U.S. NGC!