I hope they give us custom matches options and the ability to enable or disable respawns and limit certain guns like "pistols only" for example these options to customize matches is what will make this game fun and help them in sales!
That way you can mix and match your way back to GR1/2 style settings, just turn off abilities to see through walls, or anywhere in between if you want everyone to have the regular class balance except sensor nades only detect people via the minimap or something.
At least give the game a try before you guys complain about it. According to people who played it, the equipment is not that bad. They went the class route and I believe they should keep it there. It forces tactical gameplay. If you see the drone then shoot it down. I guess what they could do is instead of the drone automatically targeting an enemy the engineer has to manually tag him or something but I would not turn it off because then you render this class useless...That is just my opinion.