Maybe (maybe) there is a marked gain in sharpness also when printing.
http://scanscience.com/ gives an example although this is a site from a liquid producer so it might be biased.
Considering your drive for quality and perfection I suggest you try it at least with some low-value negative. The gain you should get in quality is probably bigger than any improvement in the enlarger glass. Who knows, you might find an unexpected improvement.
Pec-12 is a very reliable liquid much praised by professionals in some fora and gives no problem at all. I personally use it occasionally to clean finger marks on the emulsion side. I never used it to remove scanning fluid but some people does this job regularly without any problem.
I would certainly try wet scanning if I had a scanner supporting it (with my desktop scanner wet scanning is not feasible).