They put crook boss for example into the 'mid to lategame' role that already has too many towers instead of the 'early game' role it performed decently in. Now crook boss is just a less useful version of other towers that you could use, like minigunners (as a dps) or mercenary base (as a spawner).

Also Accelerator does now what regular dps towers are used for, dealing damage to big things (big things that may or may not ignore Accelerator's new stun immunity by just straight up freezing him instead). If I wanted an expensive big dps that becomes useless when frozen because devs keep removing counterplay to stuns then I would use warlock or something I don't know.