I decided I was going to limit how many alts I actually had, so I've been doing a lot of stripping.
A second account can help, but you can do this all in base storage as well. (Except recipes)
Respec is definitely the way to go for getting all the enhancements off your character.
Salvage and enhancements can go into base storage.
Vanguard Merits convert to reward merits.
Convert Astral merits to Emp Merits.
Reward merits & Emp Merits can be turned into Hero/Villain and Transcendent. If you're close to 50 on one, it's usually worth it to do something to get to 50, rather than email 40 of something. Then email to yourself.
Sell off any medium and lower inspirations to a vendor.
Convert any incarnate salvage to threads and buy super inspirations.
Large & Super inspirations can either be auction housed, or stored in the base.
And of course, selling everything is another valid technique.
Once you have sold everything and passed everything you can off, email the influence to yourself.