[Tesla Bank] is a weird nuke mod that has a lot of very interesting interactions with different abilities. Unfortunately few of those abilities are on [Vauban] so we're forced to run it as a traditional nuke exactly as it was intended to be used. We subsume an armor stripping ability as we don't run enough strength to reliably use Bastille for that purpose.
Fire Blast is chosen as it rips off a huge chunk of armor at only 100% ability strength. Shuriken fully strips but needs 143% Strength and an augment. Pillage is far weaker but also provides a lot of survivability in general content.
Tesla Nervos and Photon Strike are the weakest abilities depending on what you're trying to do with [Vauban]. Replace Tesla Nervos on builds that don't care about additional CC and replace Photon Strike on everything else.
Range is pushed high enough for [Tesla Bank] to hit an entire room. Duration can be sacrificed for additional Range but it shouldn't be necessary.
Strength doesn't need to be any higher than 100%. [Augur Secrets] is intentionally lowered a few ranks to fit into the polarity plan with no downside.
Arcane Velocity is primarily run for the [Kuva Nukor] synergy. It can be replaced with any other arcane to suit your playstyle.