I have used both short and long ice axes. Both technical and "standard".
I'll admit I have started becoming a much larger fan of 75+cm ice axes + trekking pole. Especially for moderate. My rule of thumb, is that if you need a shorter ice axe length due to terrain steepness, then you probably would not be able to self arrest anyways and therefore need to practice, not slipping, not slipping, not slipping, and not slipping. If you only plan on moderate, using ONLY trecking poles is also an option. Not highly recommended though unless in soft snow conditions. If hard, nunt uh. Can generally only be used in the summer time. Forget about fall/spring generally. I know a guy who does this, goes slow and the NO slip policy. 4 points is far superior to 3 points where one is always moving leaving you with 2 points and balance issues. I still prefer the longer slightly heavier axe and trecking pole though. Yes, you can buy a whippet from Black Diamond, though it weighs about the exact same weight as a long REAL ice axe and singular pole.
For working around crevasses, I have found it is better to have a longer ice axe as it is generally in my case, my first piece of pro and a shorter ice axe just does not cut it in softer conditions IMO. Dig T slot place axe in get everything situated, then go fumbling for the snow picket, obviously if its icy enough for an ice screw life is much easier. Everyones exact method for crevasse rescue is different. What I just described is for a 2 person team.
Likewise I prefer a longer ice axe for using it as a boot axe belay as one does not have to bend over as far throwing you off balance.
I personally have never used microspikes. I have seen them. They seem about perfect for all moderate snow travel. Only if it is cold out and stays cold out creating a hard snow layer does one really begin to appreciate real points on your crampons. Before this you are better off with them off your feet.