Del,
Think Track Miles....
In the scenario given for 08R what level do you think the inbound from BEXIL is likely to be at say, due south of EGKK, even without a level restriction? It's gonna be about 24 track miles to touch down from there, so say about FL80 (love CDAs)
I'm with Scott, If you need a level restriction, re-state it.
Rgds BEX