I really like the idea of a player being able to consolidate their troops as off players typically need to be more active than other players.
To balance this I would suggest this can only be done for level 20 troops so that time has been spent and also resource.
This stops level 1 troops becoming level 20 for free essentially.
But it also means when Off players lose their hammers they are less likely to leave the server as they can regain their troop numbers quicker meaning more immersive experience in Travian kingdoms.
Another Idea that may be useful would be the use of a general to also add this mechanic,.
Maybe the general can level up just like the hero and allow for a certain amount of troops to consolidate each level every 24 hours if the devs/other players are worried about monster hammers.
*Edit* Ok so vefore i forget the general slots for upgrading could be as follows
*reduce 24/h delay for the above consolidation to 20h at level 100?
This is my first time back to Travian since a very long time and I'm glad to have found the Kingdom servers as it is something fresh