What about adding those beautiful classic Polish machines? Cold start and operating them could be a really cool challenge, and it would be a first time to Polish railways being developed in any train sim game
I think that there is a potential in this. At least, for DTG this will be a new country with lots of possibilities. I stand with you in this idea!
EU07 or EP07 as passenger trains engine, ET22 or ET41 as transit freight trains engine, SM42 as diesel shunter/local freight (all in proposed Warsaw - Lublin 3000V powered line) or SU45 for passenger services and ST44 for freight services optional with SM42 as local shunter/freight on beautifull diesel line from Kostrzyn to Krzyz in western Poland.