Not sure where my comment go but add a speed upgrade, add another promotion upgrade adds 40 income or 20 as it would combine with the other one maybe a monster locater (Highlights the monster) you can make it 100 and highlights them for like 10 seconds or 7
Found my other comment was on 0.7 teaser, i deleted it and posted a simplified one here i made it so long tbh
For speed purposes you can increase it 15% or make another segment of this but adds another 15%