It seems to me that the designers could easily introduce a new feature to the game that would immediately make different parts of the meta viable without breaking anything: Squad Cards.
A Squad Card would be standard sized ship card that would contain discounts (or buffs) for flying certain configurations of ships. Only one allowed per 100-point squad. They could could come in thematic flavors (based on canon or EU), experimental, hypothetical, or even "funzies".
For tournament play, they could be played for a year at a time, and then retired on a rotation basis. This would be key, as it would allow for developers to respond to meta shifts without breaking their self-imposed ban on errata and card reprints to fix obviously overcosted ships.
Examples:
EX-Wing Squad: 1 point
Receive a discount of 2 points on all generic X-Wings or E-Wings (limit 4).
Astromechs reduced by 50% (rounded up).
M3-A Squad: 1 point
Add one Hull and -1 points to M3-As equipped with a Title card (limit 4).
One canon reduced by 50% (round up).
Imperial Variety Squad: 1 point
Receive a discount of 1 point for each different ship type in your list, as long as your list contains no more than one unique pilot, and no Crew costing more than 4 points.
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Etc.
Thoughts?