Design screens and then generate BMS maps for CICS

the BMS map to XML or HTML format?

I'm afraid that I cannot answer this one - as I'm an IBM person and a member of the CICS Strategy team to boot - and am so prevented from talking about non-IBM products.

All I can say is that the tool you choose should be able to generate the BMS extensions that allow for the description of the fields on the panel and the generation of HTML templates as well. Look at the APG and see what is available via the base BMS macros and check that these functions are around in the tool.

You should also have a look at some of the Java development tools which can take a COBOL-formatted structure and convert it into various interesting layouts.