I am no longer allowed to make fun use of sand bags, tree branches, a small cluster of surplus mines, and a small sign warning the oncoming forces 'There are Capellans present, advance at your own risk' while my own units run the heck away for something more defensible to hide at.
I am also no longer allowed to have all my combat units be in hidden deployment on the map before game start.
Command Detonated Mines are not an acceptable way of saying hello.
Vibro-bombs can not have 'door to door solicitor' as their setting.
I am not longer allowed to attempt to justify why I should be allowed to bring an SSGN/SSBN into a scenario as offboard artillery for a campaign. No one likes massed cruise missile strikes (well, maybe the spotting units) as a wake up call to start an engagement.
I am not longer allowed to see just how many bodies it takes to gum up the tracks on a tank or to trip a battlemech (IE: No, I can't just take all infantry and field guns anymore).
Dropships may not be used as a way to clear out a plot of land for new house.