I just make extensive use of the minimap to monitor situations and jump around, as well as the unit list/statuses in the upper right. It's rare that I encounter a situation where I need to zoom out further, which is a tribute to the map design IMO.
Takes some getting used to if you're used to simply zooming out, but I've found it pretty fluid once you get used to it.
My biggest beef with the game so far is the sheer German bias. Unless you (and your teammates of variable quality) play a perfect early game and completely control the fuel supply, a competent German player will win via tanks. Soviet tanks (the default ones at least) are completely underpowered except for the shock commander's heavy tank, but that's a mid-game asset at best.
AT guns are too slow, and can be blown past even if strategically placed. The soviets also lack any form of tank traps. The most effective Soviet AT solution I've found is 3-4 squads of Red Guards supported by AT guns, which is well over 1000 manpower.
From what I can tell the Soviets are, specialty units aside, supposed to be the zerg. But zerging German tanks with anything other than complete control of fuel is logistically impossible. Hell default soviet tanks are so ineffective that I've only ever used them to go after halftracks and infantry.
Put another way, my "tank destroyers" are solely being used to destroy infantry and light armor. Ugh. Pretty sure that's not what it was like in WWII.