Are pirates and Star-base Cost Effective and able as a defense against flanking and there ability to flank?

Definition of Flanking in Military language
Quote from WIKI: http://en.wikipedia.org/wiki/Flanking_maneuver
In military tactics, a flanking maneuver, also called a flank attack, is an attack on the sides of an opposing force. If a flanking maneuver succeeds, the opposing force would be surrounded from two or more directions, which significantly reduces the maneuverability of the outflanked force and its ability to defend itself. A psychological advantage may also be present, as flank forces usually do not expect to be attacked.
"In the hopes i can smoke more than one opponent in a 1v3 game"
What do you guys think? Suppose im playing against three casual players on a big map and i want to smoke them but want to defend my flank positions effectively and quickly enough with a star-base. Is that viable in this current game?
Should they increase the speed to setup star-base installations for instant or give star-bases new abilities?
If im going to be attacking on one player with a big fleet then how can i defend myself more effectively than having to micro fleets. While fleets are the best defense against an invader and the best offense then how can starbase deployment be further improved to accommodate multi-front line defense and attacks?
Vasari star-bases are the easiest in terms of offense but my problem is after the release of original sins: Entrenchment and diplomacy didn't offer any worthwhile investments that could replace fleets as a flanking tool. While pirates can do this-how can this be improved? Primary now star-bases are bases to trap enemies and fall back to and pirates are just annoying for everyone but star-bases can be avoided and bombed from the other-side of a gravity well which makes me hate the costing of their modules and the limit on how many modules you can use.