1. So in general SDK player db can be used in custom mod which would override XKT db? Does it contain mainly all the players or there is some advantage of usage Players.*.ini from XKT still? What else can be replaced without breaking game in such manner? Also the latest is v4 or the one in root folder of Ini?
2. How simulation works? I've played most of career with simulation matches with having mine player and opponent set to pro10 level(read it somewhere here that this is optimal), and having my player higher stats all around better then Federer or Djokovic still loosing most of finals to them. Does play style can affect it? For example my player is 90s everywhere and play style is All-rounder.
3. Does game only rely on provided RankPerYear for player development or there is some randomness included? I would like to have different kind of simulations, and probably different players in top while simulating different careers, if there is some option to adjust it somehow would be great

4. Does career shine much better with playing TE4 + TEM2? Can it be used together with mods same way as TE4 and is the difference only in more options for you as manager or also more options in simulation etc?
Also one potential future request if that would be possible to have stats history of players before game started, for example I've started in 2005, and would be great to see which tournaments players have won before IRL.
Thx in advance for response and for great game, which unfortunately I've found only now.