The explosive RC is slower compared to now, on par with the standard RC in the games. The Defroster is faster and has more health. Working on defrost time but to make it fair will likely be a bit faster than players do it. Not sure how I would do it but one idea was to give the defroster car a certain number of droppable EMP rounds (in place of C4) instead of sitting there so its not a sitting duck.
Forgot about the spawn area warning until I was told about it. Just an idea and IIRC the requirements for it to activate is to be very close to the average of all enemy spawn points. Closer than the range of C4. And only if the weapon used is a primary or a headshot.
There are two differences for hit damage compared to the standard multipliers. Headshots are instakills in all cases regardless of weapon, range, obstructions, or armor. In return, no damage to feet and hands. I will have to double check to make sure there are no other variables in play but there shouldnt be. Currently, it is a standard openwarfare option but not enabled.
The Semtex change is a balance with the addition of the Contact nade, which serves the same purpose but without the need to prime it first nor hold onto it. So you can still have your main weapon at the ready. However, if you desire, you can still prime a semtex and run towards your enemy then let it go.
And yes, I have done that myself now and then if I am low on ammo and it was a last resort. Quite frankly, most players here are much better than I am. Funny when it worked and the FU's. Kind of like an idea a certain someone had with not having to throw C4 before clicking the trigger. I think the idea was to run into the enemy spawn and take one for the team. Kaboom. ;-)