Read the last sentence of the 2024 version.
You mean this:
If you cast this spell again, any simulacrum you created with this spell is instantly destroyed.
Not a problem. You (the Wizard) is not casting it again... your simulacrum is using
wish to duplicate the spell to create another simulacrum of you. Ad naseum...
You can by how it's written, but the intention is that you don't.
And that is the problem. If the intention was you don't, it would be easy enough to write it that way. So, it begs the question, why... after
knowing this to be an issue... did they not fix it?
Resl games ruined in common probably 0.
As long as the DM takes step to actually
stop it from happening... true. My game wasn't ruined, but I had to stop it as DM. We shouldn't have to fix an issue which has been known to be an issue for a long time.
Maybe it will be errata'd someday.
Your clone wouldn't have a spell slot to cast simulacrum because you've already used that slot up casting the first simulacrum.
No. You use your spell slot (7th) to cast simulacrum. You still have your 9th-level slot.
Your simulacrum uses
it's 9th-level slot for
wish, to duplicate
simulacrum and create a duplicate of you. There are now TWO simulacrums... the new one also has a 9th-level slot because you did.
The new one repeats the process, always duplicating you, and newer ones always have the 9th-level slot to continue the process.
The limiting availability of Wish solution seems more elegant to me than reducing the power of a cool thing, but if that's your way have at it.
Really? Hmm... If
wish is otherwise an issue, go for it.
My solution is simple:
If a simulacrum of a creature exists already, the spell fails automatically. How hard is that? You tack that on to the 2024 version and you're golden.
So, worst case scenario: You make a SIM of yourself. The SIM uses
wish to make a SIM of itself. So, that's it. And the last SIM would only have 1/4 of your max HP (half of the original SIM) and no 9th-level slot, either.