Ya know...... That's not such a bad idea.
Just the rumors that HiTech is at this field or that field, doing something whacky..... spawns a lot of interest. The reality, that while at work, that sort of thing might be the last thing that you have time to do, is taken into to consideration. Playing after a long day at work might not be exactly what he has in mind either (considering the picture of the 2 cuties he has waiting for him at home).
Making small announced changes for a short term might be less taskful.
In my custom arena setups I enjoy making object hardness very light, it adds a satisfying feel when you roll into some town or other structures and pump a few 50 cals into it and watching it flame.