I used to do this in forum post, but now that I think about it, it is probably better to do it as blog. After each event or new card release, there's generally a discussion of the new cards and how to medal them. Without further ado ...
WarSim Capture Event Card:
Crimson Guard UC-R: Not really worth your time (one skill only). TAC, though.
HISS Driver R-EP: Bit better, this is 20% vehicle skill card. But only that skill, so kinda ... bad. If you want enhanced vehicle cards, there are several Super Soldiers that have 15 or 20% (Thrasher) as well as another skill. TAC again.
Blacklight R-EP: Okay, this one is interesting. His instakill is pre-battle, so AGI is not a factor. His self ATK boost is 1) not that necessary (he has a very high ATK) and 2) apparently 'heavy', so I honestly don't think TAC is absolutely needed. HP and DEF are low to midrange (10k-12k). If you plan on using him in a 'serious' squad, with a DEF buffer (Overkill, original CC, NI), then I'd do HP; if he is going in without buffs or as a full Blacklight/destroy lineup, DEF is his lowest survival stat.
Krake R-EP: Oh look, it's Cobra Eel. Only his main skill is AGI instead of ATK based, and that's good for a Sabo card. AGI all the way.