It's been asked a couple of times how Zellbringen will work, if at all.
The vast majority of the scenarios will have zell as an OPTIONAL rule. That is, you can choose to employ a strict or liberal zellbringen and get a certain number of additional WCP as a reward for winning the scenario. This works in the same way as applying an environmental condition during, say, the Chaos Campaign.
Aside from potential increases in WCP rewards, zell the presence or absence of zell can affect your unit selections. In effect, artillery-equipped units cannot use their artillery weapons under liberal zell (at least until zell has been broken), and cannot be deployed at all under strict zell. If you choose not to select zell at all, then it doesn't matter. Note that VERY rarely, there may be scenarios which *require* you to use strict or liberal zell at no additional WCP reward. If you're under a level of zell that forces you not to deploy an artillery-equipped unit, then that unit must be bid away during the bidding process.
Also, as a side note, the Clans do not use Tube artillery at this time. The only artillery you may use (as a custom or by selecting, I dunno..a Naga or something) is Arrow IV.
I don't THINK there's any other equipment types available to the Clans which impact zell (since you don't have C3 nets, etc), so that should be all. If something else is brought up, I'll rule on it then.