I have my doubts if a strobe would help much.
Could easily get mixed up with reflections from the ground, (car windows, and lots of other things could cause flashes). They could no carry high power strobes.
Like other RC rebels (ie FPV) it is a small number of people who ignore the law, and any legislation would no make any difference to them, they would still do as they want.
The problem is that they are now so easy to "fly" that any one can buy one and "fly" it.
It is the sale that has to be controlled, not the use.
Sell only to people who have the BMFA A cert at least, and belong to a recognised club.
That would make enforcement of current legislation more manageable, and that legislation is sufficient if followed.
More legislation would only affect honest users, it would make no difference to those who don't care in the first place.
That way they can be enjoyed in safety, and the people breaking the law will be easier to identify. If of course there is any manpower to do anything about it anyway.