Sadly the backspace is an webgl-issue, I can't really do something about it. The only way to delete chars in the webgl-version (in Chrome) is currently using the del-button or marking characters.
There's an exploit; you can start a fight with all of your trimps working as trainers then fire all of your trainers and switch them to production and your fighting trimps will have all the block you can give them while your production is also at full; as long as you're doing a low enough map that they don't take damage you only have to do that once a map and you'd need to click stuff once per map anyway
You guys really need to test more. More than one of the new factions had ways to progress very quickly with no indication that they were not working as intended, which were then ripped away. It does not make for a good experience.
Would be cool if you could do double faction by continuing the faction coin cost progression - 2500 to get the second faction, 12500 for the second tier, 62500 for the third
Now the ghost is banished if it kills you, but you don't gain stars/gold for that stage as a penalty (instead of game over)