I allow cover to work as indicated on 213. Our wookie FSE with four ranks in the left side of Sense was upgrading his enemies attacks difficulty twice and adding two setback dice (one from cover, one from armor) to attacks against him. The four trandoshan bounty hunters I sent after him and his partner didn't have much trouble plugging him several times regardless. Not to mention that despair (which ended up blowing up the wookie's cover) and good quantities of threat/advantage came up often enough to even things out.
Nor did the super-sized mutant gundark I unleashed on them. He had a rather handsome brawl pool.
Dice bloat simply hasn't been an issue thus far.
Besides, the rule works both ways and my NPCs have taken just as much advantage of it as the players.
Edited by Deathseed