[mention]fearedbliss[/mention]
I definitely hear you bro. I understand your approach/rationale on this. I think for a person returning to the game, if they stick to just one 1.09 platform, and choose only Succulent, it does makes sense to have/give them a larger stash. Because, why not?
However, for someone like me, who jumps between the two (Vanilla & Succulent), and who first started on Vanilla, the lack of compatibility between the stash sizes is what poses an annoyance. Because of the expanded stash, I’m unable to launch my 1.09 characters in Vanilla if they have any items in the expanded area of the Succulent stash.
That is actually my main gripe, and it just happens to be the case that ATMA isn’t compatible with it either.
Regarding ATMA, IMO it poses several great benefits beyond keeping a map seed, which is why it’s become an integral part of my D2 arsenal. For one, it’s super convenient to simply tab out of my game/into ATMA, and perform an item transfer and/or backup with a few quick clicks of the mouse. There’s a considerable time savings there in contrast to firing up a new instance, hosting a game, creating and/or finding the correct mule out of my dozens, and then performing the actual xfer in town with myself. I have amassed an insane amount of items in the past 1.5+ years since returning to the game. I am a collector, lol. I have a LOT of mules, and organizing them is nightmarish without a dedicated tool for managing them. However, with ATMA, they are all neatly organized, in alphabetical order, and separated in the directories of my choosing. I have several mules for complete sets, for uniques based on item type, for magic items based on item type, etc. etc.
Now, would I be using ATMA if there was a better solution in-game? I’m not sure, but at that point it would be a much harder decision, because I do agree with your premise that it’s better to leave out third-party tools when possible. However, after many months of using it, ATMA feels like a worthy companion. The guy who developed it was obviously very passionate and made many refinements/improvements over it’s development. Now, I’m all for someone building a mod where ATMA-like functionality is integrated within D2. That would be sick! I’m not talking about something like PlugY, though. Endless stash tabs is not an elegant solution at all, and feels very un-Blizzard (North) to me. But I digress. ATMA just ticks many checkboxes, and is superior to LAN muling in every way, IMO.
Regarding the map seed... I do appreciate your perspective. As for me, I am more of a completionist type of player myself. I enjoy seeing my entire map revealed, getting all the waypoints, knowing exactly where Abaddon is, where my LK super chests are at, my Cairn Stones in Stony field, etc, etc. I cycle through maps on each character, until I find one I love, and then I keep it forever <3
Anyways, love talking Diablo II with you my friend! One of the things that I really appreciate about all your mods, is that every decision you make is extremely well thought out, and carefully considered. You are obviously very passionate about the game (I think even moreso than me, which is honestly kinda scary to imagine :lol

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P.S. Never experienced or heard about that indestructible bug. Will need to keep an eye out for that one!