Built-in autosave feature (for the TE version).

I would make an amendment!
The potential is not higher for the players, but the game version implies a more aggressive style, and accordingly, the difference in the level of play or the presence of minor errors in geometric progression affects further development and the result...
Moreover, if we compare based on reports and achievements, TE seems to have a higher level of play than SoD.
But this is all misleading... you forget to take into account the features and nuances of the game, which are less known in the TE sandbox than in the SoD sandbox.
Having a loan, scrolls in gold, monster experience, and other differences between TE and SoD, taking all the goodies and developing in general should be faster and stronger.

I wasn't talking about that level. Imagine some starting conditions (or better, a series of conditions). And some ideal level of development, say, in 2 weeks. Let's take it as 100%.

Then, we give these conditions to different players and see what percentage of the ideal they achieve (in a real game, not offline). This is the infamous level of efficiency. We average it across the conditions and compare.

I have analyzed the saves of many players, and I have a pretty good understanding of the level of play of many players. So, with top players in SoD, I often see a lot of mistakes that are not typical for top players in TE.

Recently, I watched Vitalik's game against Sirus, which he posted in the interportal thread. He was afraid to attack a group of lizards on the grass with a flux with 7 basilisks from Bron, a flux army (with water elementals), and a devourer from a castle hero.
I, on the other hand, broke them with the loss of 2 air units and 2 water elementals, without magic (and with a spellbook and haste in it, it would have been even easier). In real games, I have also broken these groups of lizards many times for flux, even without basilisks (for example, in a game with Inviz).

And this is a player who has something like 90% in tournament game statistics in SoD. I still have a lot to grow...

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Another important point is the possibility of creating a single, universal version, which must then be promoted beyond the ru;net;by sites.

Unrealistic. Are you yourself ready to study this new version without groaning and complaining? Your colleagues in the craft?
Poll the people, listen to what they have to say.

And in the dynamics of the game, we should not be afraid of increasing the average game duration in days/weeks.
Because in its current form, it is significantly reduced. And justifying this by reducing the amount of real time spent on a game is not entirely fair and even stupid.

I agree with this. I have thought a lot about this issue. A resolution on the 2nd week is not quite what the game needs. There is too much dependence on the starting conditions. That's why I'm thinking about a way to slow down the pace of development - by reducing the starting money, the amount of money on the map, and cutting the most powerful heroes. As well as improving the templates.

By the way, there is a suggestion to replace the reward in meat objects (clues/cons)
Either according to the principle: for 30, for example, snakes, we get 4 random monsters of level 6, and in a con, the minimum, for example, is a random monster of level 7.
Or diversify by class.
In the maximum con, they give a monster of level 7
in the triple con, they give monsters of level 6
in the minimum, level 4, etc.

I made it in a slightly different version; you can see the description here - http://www.forum.heroes.by/viewtopic.php?t=712&start=0

However, players have started to complain that this greatly affects double-build and the number of native lairs. With the old cons/hives, you can compensate for them, but with the new ones, you can't.

Therefore, I decided to give the opportunity to order the type of con/hive for money. For now, the working price for ordering = 1000 * + 500 * <number of previous orders for this race>.

I haven't gotten around to implementing it in the scripts yet.