While I haven't run into those Securom issues yet, I agree that we should really try to limit the effects on users. Analyzing drivers for suspicious behaviour is one of those things that I don't think are worth the trouble they generate.
There are often legitimate reasons to modify drivers. My 3D video driver would be one example. The Truecrypt encryption that I use for my drives another. The Wireshark software I use for analyzing my network traffic a third.
Apparently many copy protections have by now whitelisted the software I use every day, but with older games and older copy protections I sometimes still run into trouble.
The worst thing was Trackmania Forever, a FREE game that for some reason installs one of the strictest securom implementations I have seen. I still haven't succeeded in running it.
Having said all that, I can't think of any acceptable solution other than TTG implementing their own DRM.