Some gamers are really into Armour, so infantry is secondary even if they realize Armour without infantry support is at a disadvantage. Many of these gamers do wonderful detail on their tanks and considerably less on their infantry because that is not where there interests are. You will find the "tiger tank fanatics" in this bunch. Many do infantry only because they grudgingly know they need them... consequently their infantry and old game counter bases are usually painted OD with "0" or minimal detail.
The infantry gamers realize war almost always devolves into a CQB struggle so they do tons of well detailed infantry with all the supporting arms with specific armored units for a balanced force. Their bases are usually detailed for the battle or campaign they are fighting at the time and it isn't unusual to find different units set up for different theaters of operation, from the plains to the deserts.

Some gamers are proud of their "troops" and want them to be well detailed no matter what period, theater, or organization their gaming group uses. They tend to do balanced forces with fair to good detail and flocked bases.

The pure modeler, who also games, wants all the detail correct. He wants the correct helmet, cartridge belt, etc..., as well as the correct Sherman for the year, unit, and theater. He is appalled when figures are larger than he thinks they should be or a tank is equipped differently than his research indicates it should be.
Then there is the "gamer" who uses the tanks, infantry, artillery, aircraft, as a means to an end only. They can be painted or not, bases flocked or not, and the equipment can be correct or "close" as long as the label on the base tells you what it's supposed to be, ...it's close enough for them.
So... your call. Our group uses fairly generic bases that help the players tell them apart. Basic flocking lets them know the base is an infantry fire team or squad. A little bit of brush and only a couple of figures tells them it's a support stand, and a stand with lots of "distraction" is a speciality unit of some sort, ...in our group usually a sniper or a scout/observer stand.
The scale of the rules you are using helps determine the level of detail required as well as what you want people gaming with your figures to visualize.
Will