I had trouble understanding pops' argument at first too, but now that I get it let me try to explain it more clearly:
If Redistrict is better than Remodel, then that's obviously it's own problem. If Redistrict is worse than Remodel, then every time they appear together, you will use the one-shot ability of Redistrict to turn it into Remodel (assuming that you have just Redistricted an Estate). The Redistrict will never stay in your deck for more than one shuffle (unless it misses an Estate).
I don't know how much of a problem that is. Other official cards do that too (Feast, Pillage), but those cards aren't really intended to have a decision about when to trash them, since they only do things when you trash them. So I'm trying to figure out whether Redistrict is strictly better than Remodel as an opening, and I think it is:
Let's say you open Remodel/$3, then Remodel Estate into a $4. Then you end with Remodel/$4/$3.
Now say you open Redistrict/$4, then Redistrict Estate into a $3 and trash it for a $4. Then you end with $4/$4/$3, which is the same as above but more flexible. (It also grabs the $4 earlier which is probably slightly better.)
So if that's right then that's an issue, probably what popsofctown was worried about.
Aha, I see! Thanks for going through that. Yes, that is undesirable. I guess? Probably. Yeah, let's say it is.
So a couple of possible fixes:
• Cost it at $4. Either I can include a clause that doesn't let it gain itself, or I can just suck it up and let it gain itself when you trash an Estate with it and then trash it.
• When you trash it, you just gain a differently named card costing the same as the other one you gained. This seems like it would have really awkward wording. Well, let's try it:
Redistrict
Types: Action
Cost: $2
Trash a card from your hand. Gain a card costing exactly $1 more than it. You may trash this. If you do, gain a differently named card with that cost.
This is the most concise wording I can think of, but it has the issue of being unclear whether I'm talking about the card you gained or the Redistrict itself. Although it would make the card significantly more powerful when throned, I could instead have this clearer wording:
Redistrict
Types: Action
Cost: $2
Trash a card from your hand. Gain a card costing exactly $1 more than it. You may gain a differently named card with that same cost. If you did gain 2 cards, trash this.
Or soulnet's wording:
Redistrict
Types: Action
Cost: $2
Trash a card from your hand. You may gain up to 2 differently named cards each costing exactly $1 more than it. If you gained 2 cards, trash this.
Any preferences?
EDIT: Or maybe the fact that it's better for trashing Estates than Remodel isn't a big deal. It usually can't be used to trash Gold for Province, which is a big part of Remodel's power. Argh. Well, since I already cut and sleeved the original version but haven't had a chance to playtest it yet, I might as well test it as-is first and see how that goes.
EDIT 2: Yeah, the more I think about it, the more this seems OK. Chapel and Masquerade are usually better openings than Remodel as well, but neither does all the things Remodel can do.