It would be nice if it would be possible to configure the JSP parser to use an extra directory for taglibs (which is not found relative to the project root) if you have some exotic path layout .
I.e. we use a layout like this:
/project
/src_java
/src_meta
/META-INF
/WEB-INF <- the .tld files are here
/src_web <- the .jsp files are here
This causes some trouble and real slow JSP parsing and validation.