Playing as the Germans, if I get a bad roll on the G1 expedition to sink the UK fleet, I’ll give up fighters before Tac. I prefer having those Tac to roll @ 4 over my armor as I march to Moscow.
As the Japanese, those Tac go very well with all the starting Ftr, bringing some UMPF. I’ll generally trade Ftr before Tac if Japan gets diced somewhere, because its cheaper to spend 10 IPC to keep those Tac rolling @4.
In both cases, I rarely purchase more than I start with. If I DO buy aircraft, they will be bombers. The extended range and guaranteed roll @4 creates all sorts of chaos across the board.
If Italy survives the KIF and starts making money, I’ll get a second bomber with her to fly over Armor/Mech that backfill German advances in Moscow.
As the Americans, its a bit different because theres a large expanse of territory to cross that bombers can’t always support dictating a balance of Tac and Ftr to support any land advances she makes. Rarely do I buy bombers with her unless I am trying to lure Japan to Hawaii so I can sink a part of her fleet with a combination of bombers and subs.
I do enjoy purchasing bombers with the UK in the mid game. It puts a damper on German production once Germany’s aircraft move deep into Russia. Early game I’m buying Ftr with the UK to land on carriers later to control the English Channel. Nothing beats absorbing a few hits with carriers to simply land the Ftr in London for the carrier to turn back off its side and re-land the Ftr on them again. Those Ftr also provide amazing coverage for a US landing where Germany would re-consider a suicide blitz to clear the US units out of France because tehre are 3-6 UK Ftr landing atop of 8-10 US fodder.
In short, I rarely buy Tac for any nation and only enough to keep the US extension of power in the Pacific a viable threat to a loosely defended Japanese fleet.
They have their purposes, but you’re usually better served to buy an Inf and a Bomber instead of an Art and a Tac.