Never ever build to satisfy the advice of investors. If you're looking for outside advice on something as critical as what platform to build on, focus on adding stronger technical talent to your team.

As a rule, investors who tell you "I'd be more interested in potentially investing if you do x" are a waste of your time. If on the other hand, you're initiating the conversation ( e.g. What do you think we should build on) then you're signalling you're not ready for investors.

As a product guy and angel investor, happy to do a call with you to understand your team, what decisions you are facing and help plot an actionable path to getting on track to being ready raise investment.