I was lucky enough to get out of SSIS work a earlier this year (and I only did it for about 6 months total) but it seems to me that if you want to make some money off of SSIS take a look at version control. Currently, SSIS packages in git are a crapshoot. There is no way to tell what has changed and what a merge will do. We've had a merge actually cause our steps to execute out of order. If you could create a tool that allows for easily doing version control (with merges) for SSIS packages that would be an easier sell than a new IDE