Okay, I'm going to give you feedback on this list but as the others have said, you need to actually follow through on one of these million hypothetical tanks. If the plan changes again, don't start yet another thread asking about it. In fact, you should probably just get the tank and set the thing up before worrying about putting anything in it, since you never seem to get beyond the planning stage.
Clown tang- No. These guys are too aggressive and will just end up giving you problems.
Naso tang- This is up to you; a 240 is listed as the minimum size. Personally I think they just get too large and I don't like the look of such an enormous fish pacing the tank, but if it is a fish you really love then go for it.
The blue, purple, and Achilles combo is fine; I've kept that group myself without problems. Quarantine the Achilles for a good long period and make sure it is eating well. If you wanted to replace the naso and clown with a yellow tang or a kole/other bristletooth I think that would be fine.
Zebra eel- Pass on this. If you want an eel, set up an eel tank instead. You already had issues keeping the other one in your tank and you'd have a worse headache trying to eel-proof a larger tank, so I'd just scratch that one from the list.
If you want maroon clowns you could certainly have them, though personally I would look into a more docile option since you want some more peaceful fish like anthias and wrasses. What about a pair of snowflake clowns or something instead?
The goby, chromis, and fairy wrasse are all fine. You could add some more compatible wrasses and a dwarf angel(s) if you wanted in a tank that size.
The mixture of anthias is of course up to what you like. I think a large group of lyretails would be both beautiful and not as pricey as many of the other options.
Hopefully this tank comes together for you. I applaud you for wanting the advice of others instead of just plunging in on your own, but you need to get a tank actually set up and running before offering us any more of these hypotheticals.
