When I was considering a compact I worked out all the new gear inches and saw that the old-way 1st gear was about the same as the new-way 2nd gear. So for me, it was like adding one lower gear and losing the topmost one. Realising that helped me sort it all out. (BTW, it made a big difference for me, most worth it!)
Some have said the way they plan gearing is to get the lowest gear they need for the terrain they ride and let the top gear fall where it will, and also "I never need more than 90 for the top gear". Both seem like a good idea to me.